CHANGES

Version 0.9.8.11:
(2016-03-14)

   Added salvage
   Added log_player
   Added metalog_tool
   Added htck
   Added ht-wait-until-quiesced.sh
   Updated copyright date
   Fixed ssl link problem with recovery tools
   Fixed bug in CellCacheScanner where scanned cells are only deletes
   Fixed bug in fast_clock::to_time_t
   Don't apply TIMESTAMP filter when scanning index tables
   Removed thread_local storage specifier from random engine variable in Random

Version 0.9.8.10:
(2015-12-22)

   Updated for Thrift 0.9.3, Java 1.7, gcc 5.3.0
   Added high priority reactor to AsyncComm used for UDP sockets with TOS
   Fixed regression in COUNTER cell handling
   add packaging files for python hypertable client
   Fixed clang warnings; Marked appropriate declarations override
   Added support for Hypertable.Master.RecordGraphvizStream
   Eliminated warnings
   Changed return type of FileDevice::read to signed
   Add missing try/catch blocks to some RangeServer request handlers
   Added STL-style directory container
   Added javadoc target
   Added ClusterDefinition class with system-wide System::cluster_def (and System.clusterDef for java)
   Moved ClusterDefinition code to Common
   Added --display-json option to ht_cluster

Version 0.9.8.9:
(2015-06-29)

   Fixed NO_LOG flag propagation and excessive sync'ing in TableMutatorAsync
   Fixed bad assert in ThriftBroker during scanner lookup
   gh67: Fixed RangeServer crash on shutdown
   Fixed RangeServer status reporting on empty database
   Fixed indefinite sleep problem in AsyncComm testServer
   Fixed compile issues on OSX (lack of thread_local)
   Replaced Boost random with C++11 random
   Simulate quick_exit for versions of glibcxx that don't have it
   update hypertable hyperic-sigar link broken
   Support libboost_python library location x64 arch
   Support library location x64 arch
   Replaced all occurrences of boost::xtime with std::chrono
   Added chrono::fast_clock (ClockT) for AsyncComm timing needs
   Migrated to C++11 atomic variables
   Replaced #include <time.h> with #include <ctime>
   Migrated from Boost mutex and condition variable to C++11
   Replaced boost::intrusive_ptr with std::shared_ptr
   Replaced foreach_ht with C++11 range for
   Replaced poll() with this_thread::sleep_for()
   Replaced _exit with quick_exit; Replaced numeric exit codes with EXIT_SUCCESS & EXIT_FAILURE

Version 0.9.8.8:
(2015-05-15)

   Added NO_LOG feature to allow skipping commit log write
   Added group commit to MetaLog
   issue 1196: Periodically roll MetaLog file to prevent it from getting too big
   Improved file flush logic in HDFS broker
   issue 1341: Eliminated superfluous memory copy in CellStoreScannerIntervalBlockIndex::fetch_next_block
   Added --pidfile option to performance test Client and Dispatcher
   Secondary index improvements (including performance)
   Small fix on scan and filter rows
   Fixed column predicate values that are not 0-terminated strings
   More performance improvements
   Reduced brittleness in Bad-RSML-Master-recover test
   Client side performance improvements
   Fixed bug in AsyncComm RequestCache::get_next_timeout
   Added fast numeric formatters, replacing sprintf
   Added PageArena dup overload for std::string
   Share application queues among table objects
   Cleaned up COUNTER handling code in CellCache
   Use dictionary for strings in CellsBuilder
   Reduced calls to strlen and cf spec lookups in Mutator
   Fixed path problem in auto-generated hql_types.rb
   Performance improvements in LocationCache and TableMutatorAsyncScatterBuffer
   Don't create object map entry on weak reference in ThriftBroker
   Changed strings returned by value to const reference
   Fixe MapReduce connectors for rows with non-UTF8 characters

Version 0.9.8.7:
(2015-04-02)

    gh49: Eliminated execution order problem after OperationProcessor shutdown
    Added non-blocking Hyperspace session close
    Added Node.js binding
    Fixed unhandled exception in NameIdMapper
    Moved cronolog to sbin directory
    Removed ht-backtrace.sh
    Added detailed help to all scripts with --help option
    issue 1283: Moved UPDATE_HYPERSPACE after ISSUE_REQUESTS in OperationDropTable
    issue 956: Fixed SELECT ... LIMIT 1 returning empty result set
    issue 1346: Eliminated double RangeServer recovery problem
    Added support for /etc/ssh/config and ~/.ssh/config to ht_ssh
    Fixed decoding problem with legacy OperationRecover* entities
    gh37: Fixed asynchronous connection establishment problem in ht_ssh
    gh38: Changed example cluster.def file to include core.tasks relatively

Version 0.9.8.6:
(2015-02-27)

    gh31: Fixed deadlock in Defects-issue783-offload1 test
    Fixed MML and CommitLog backward compatibility problem
    issue 1114: Made Hadoop broker respect Hypertable.Logging.Level property
    issue 1345: Added RS startup option to wait for completion of Range initialization
    Install missing header files from code reorganization
    Added missing libboost_system-mt library on Mac (Yosemite)

Version 0.9.8.5:
(2015-02-16)

    Normalized script names to start with "ht-" and program names with "ht_"
    Normalized names of client interface programs (fsbroker, master, rangeserver ...)
    Changed ThriftBroker 'status' command to conform to Nagios plugin standard
    Changed RangeServer 'status' command to conform to Nagios plugin standard
    Changed Master 'status' command to conform to Nagios plugin standard
    Added standard Nagios options to check scripts (e.g. --timeout & --hostname)
    Added support for overall system status check ht-check.sh
    Modified RangeServer::dump to include QueryCache
    Added ht.rangeserver.queryCache.waiters Ganglia metric
    Changed a few more classes to derive from Serializable
    Merge pull request #19 from grewal/v0.9.8
    Update the copyright year to 2015
    Replaced intrusive_ptr with shared_ptr in AsyncComm
    gh14: Removed spurious RangeServer log ERROR messages after schema change
    Fixed MR connector output formats to support configurable ThriftBroker host/port
    gh13: Fixed range movement problem surfaced with acknowledge_load timeout
    Changed data structure encoding format to support forward compatibility
    Added DISPLAY_REVISIONS option to SELECT statement
    Reorganized and cleaned up FsBroker code
    Set HDFS property dfs.client.read.shortcircuit.buffer.size to 128K if not set
    issue 1318: Create Range hints file if none exists and no transfer log
    Updated cmake/FindMaven.cmake to allow JDK > 1.6
    issue 1255: Consolidate transfer log code and fixed double delete problem
    Allow environment variable references in include: statement of cluster.def
    Define PACKAGE_FILE in cluster.def using HYPERTABLE_VERSION variable
    Enable slow query log by default
    issue 1335: Improved ht_cluster --help text
    issue 1333: Got rid of warning in TranslatorCode.cc
    issue 1336: Fixed \$ escaping in ht_cluster task comments

Version 0.9.8.4:
(2014-11-23)

    Cleaned up default hypertable.cfg file
    Added packaging support for Yosemite and next few versions of OSX
    Propagate table defaults from primary table to index tables
    Fixed crash in load_generator with word stream
    issue1332: Made ThriftBroker host/port configurable in MapReduce connectors
    Added java HostSpecification class
    issue1329: Fixed problem with compressor spec in old table Schema
    1328: Fixed variable expansion problem in cluster.def role definiton
    issue 1330: Added tasks to core.tasks for starting/stopping Ganglia
    issue 1328: Allow hyphen in hostnames in HostSpecification
    Addded Error::INVALID_METHOD_IDENTIFIER
    Modified CommandShell to exit with return status of last command
    Fixed bug in kill task in conf/core.tasks

Version 0.9.8.3:
(2014-10-28)

    Monitoring system - fixed JSONP rendering and YAML parsing for ruby >= 1.9
    Unset LD_LIBRARY_PATH when launching rrdtool
    Added CommandShell prefix completion and ~ expansion
    Added support for CREATE/ALTER TABLE ... WITH <schema-file>
    issue 1324: SlowQuery log crash if SlowQuery.log link already exists
    Disable slow query log by default
    issue 1325: Added missing call to ssh_init() in ht_ssh
    Search for Openssl first in default install location
    Eliminated deadlock in TableMutator::retry_flush()
    Added property Hypertable.Metrics.Ganglia.Disable
    Replaced mutex locks with atomic variables for frequently updated metrics
    Fixed alloc-dealloc-mismatch problem discovered by AddressSanitizer
    Fixed bug in cache hit rate metrics computation
    Cleaned up merge scanners; Removed unnecessary virtual methods
    Added cells/bytes Returned & ScanYield and requestBacklog metrics to RS
    Fixed bytes/cells scanned metric computation
    issue 1321: Fixed infinite loop problem in ht_ssh during connect
    Fixed EOF hang problem in ht_ssh
    Fixed read hang problem in ht_ssh
    Fixed hang problem with ht_ssh

Version 0.9.8.2:
(2014-10-08)

    issue 1310: Added ctrl-c handling to ht_ssh
    Added filename completion to CommandShell
    Added CDH5 support
    ht_cluster: added support for variable substitution in include: statements
    issue 1313: Don't dump ssh log on non-zero command exit status
    issue 1306: Fix HDFS broker to handle Ganglia port > 32767
    issue 1299: Made MapReduce connector log to stderr instead of stdout
    issue 1311: Prevent immediate maintenance scheduling for unsplittable ranges
    Made prune_tsv test independent of prior test runs
    Added ht_cluster task automation tool
    Update FindLibssh.cmake
    Changed Ganglia metric name prefix from "hypertable." to "ht."
    Added Common/Base64
    Added Common/Crypto

Version 0.9.8.1:
(2014-09-14)

    Fixed ganglia metrics bug causing last metric value to be reported indefinitely
    Added slow query log
    Renamed Common/metrics.h to Common/metrics to fix git filename case sensitivity issue on OSX
    Fixed deadlocks in ht_ssh
    issue 1264: Fixed TableSplit/RowInterval comparison in mapreduce InputFormat
    Added support for IBM BigInsights 3
    Set HDFS config dfs.datanode.socket.write.timeout to 630000
    Added support for Ganglia metrics
    Added thrift python package into installation
    Fixed problem with REBUILD INDEXES skipping first key/value
    Fixed large row METADATA scanning problem
    Added ability to limit number of initialization tasks per maintenance interval
    Added ht_ssh a mulit-host ssh automation tool
    Fixed performance problems in MapReduce connector
    issue 1266: Added symbolic links to hypertable and libthrift jars
    issue 1264: Fixed bug in mapreduce/TableSplt that caused erroneous results
    Maven'ized the Java build
    issue 127: Fixed laptop suspend problem on OSX
    issue 1027: Removed bad assert in ~IntervalScannerAsync
    Use stable_sort to sort keys in client mutator buffer
    Fixed some memory problems reported by Andy.
    Make Perl thrift Exception classes derive from Error
    Fixed bug causing GC compactions to get skipped for inactive ranges
    Pass LOAD_ALL_ENTITIES flag to MetaLog::Reader if required

Version 0.9.8.0:
(2014-06-23)

    Improved secondary index query support
    Added Cluster ID to commit log block header
    issue 1146: Change default Hypertable port numbers to be non-ephemeral
    issue 1080: Do localtime conversion for all datetime values passed through API
    Changed default Hadoop distro to cdh4
    Renamed DFS Broker to FS Broker
    Added REBUILD INDICES command
    Upgraded Thrift to > 0.9.1 (commit 816790b)
    issue 1219: Modified query cache to invalidate on row+column
    Cleaned up Schema code and HQL/Thrift schema create & modify commands
    Added methods to support printing ThriftGen::Key and ThriftGen::Cell ruby classes
    Fixed some issues discovered when building PHP API example program
    Got RangeServer::heapcheck() to dump heap stats with tcmalloc_minimal
    Fixed some issues discovered when building java API example program
    Fixed some issues discovered when building python API example program
    issue 1256: Call TableMutator::flush() explicitly in ThriftBroker; swallow exceptions in ~TableMutator
    Fixed bugs discovered when building API example programs
    Fixed schema object initialization problems
    add HypertableStorage for Pig
    Updated ThriftBroker port number in bin/start-test-client.sh
    Fixed bug in LoadDataSource with empty trailing fields
    Fixed output stream operator for Key in ThriftHelper
    Cleaned up sub operation handling in Master
    issue 1222: Fixed earliest cached revision problem in AccessGroup
    Fixed bugs in analyze-missing-keys.sh in rangeserver-failover-basic tests
    Allow COUNTER & MAX_VERSIONS if supplied MAX_VERSIONS value is 0
    Catch and log exceptions when destroying unclosed objects in ThriftBroker
    Check for NULL timeout supplied to TableMutatorAsync
    Added test for ROW intervals plus index lookup
    Got rid of build warnings (java & cpp)
    Updated lzo code to latest version
    issue 1206: Shell exceptions should report stack information only in verbose mode
    issue 1235: Prevent users from removing /tmp and /sys namespaces
    issue 1229: Fixed bad basename command in ht version
    Fixed create namespace problem when intermediate component is a table
    Properly handle case where target of table rename is a namespace
    Added ability to add/drop inidices after table creation
    Updated load_generator to reflect recent secondary index changes
    Share index update code between client lib and RangeServer
    issue 1188: Fixed race condition between Cluster ID generate and read
    Improved Master operation remove approval handling
    Removed source_machine variable and localhost role from Capfiles
    Got rid of unused merge_diff tool

Version 0.9.7.19:
(2014-06-15)

    Added HypertableStorage for Pig
    Fixed bug in LoadDataSource with empty trailing fields
    issue 1222: Fixed earliest cached revision problem in AccessGroup
    Check for NULL timeout supplied to TableMutatorAsync
    issue 1256: Call TableMutator::flush() explicitly in ThriftBroker; swallow exceptions in ~TableMutator

Version 0.9.7.18:
(2014-05-14)

    issue 1242: Fixed state init problem in AccessGroupGarbageTracker
    issue 1237: Fix stack corruption bug in dump table logic
    issue 1227: Fixed readhead problem in IntervalScannerAsync client lib class
    issue 1226: Fixed race condition in LocalBroker::readdir()
    Fixed future/scanner/mutator close order problem causing ThriftBroker crash
    Added better error state capture to rangeserver-failover-basic tests
    Removed bad assert in AccessGroupGarbageTracker

Version 0.9.7.17:
(2014-03-17)

    Set SO_KEEPALIVE on TCP sockets
    issue 1202: If target of RENAME TABLE exists, terminate operation with error
    Throw exception on invalid key timestamp (TIMESTAMP_NULL) in TableMutatorAsync
    Upgraded to CDH4.6
    issue 1193: Fixed bug in RangeServer::log_replay()
    Added package_gcc.bash to src-utils
    Fixed alloc/dealloc mismatch in Hypertable-shell-ldi-select test
    Fixed QFS broker
    Reverted back to single cell cache in access group
    Cleaned up access group garbage tracking logic
    Fixed potential loss of transfer log during failover
    Fixed missing dependency problem

Version 0.9.7.16:
(2014-02-16)

    Upgraded to C++11 compiler
    issue 1179: Fixed insert perf problem introduced by bad commit in 0.9.7.13
    issue 1193: Fixed split_row/end_row comparison in Range::estimate_split_row()
    Fixed memory leak in index table mutator
    Avoid aggressive merging during low memory mode
    Fixed BalancePlanAuthority::change_receiver_plan_location() to properly increment generation
    issue 1191: Fixed DEB and RPM package installation
    Fixed alloc-dealloc-mismatch error in hypertable_ldi_select_test
    Fixed HQL-delete test
    Fixed Spirit parser issues
    issue 1104: Fixed intermittent failure of issue190 test
    issue 1123: fixed ldd.sh script
    Got rid of INFO log message in OperationRecover::decode_state()
    issue 1193: Replaced assert with instrumentation logging
    issue 1189: Propagate exceptions from ~TableMutator()
    Modified issue890 test to compile java file into build directory
    Modified Filesystem::readdir to return vector of Dirent structures
    Reverted "merging compactions ahead of minor compactions" commit
    Allow arbitrary column selection for secondary index queries
    issue 1032: Fixed COUNTER columns "wrap around" on underflow problem
    Added NO_CACHE option to SELECT statement

Version 0.9.7.15:
(2014-01-10)

    Fixed QFS Broker
    issue1159: Fixed CellStoreBlockIndexArray::fraction_covered() bug
    Made merging compaction algo more aggressive during low activity period
    Added commons-lang-2.5.jar to fix missing symbol under CDH4.5
    Added TimeWindow class for defining low activty window
    Prioritize merging compactions ahead of minor compactions
    Moved sys/RS_METRICS reading code to Hypertable/Lib/RS_METRICS
    Fixed memory alignment issues with DfsBroker.Local.DirectIO=true
    Fixed quote trimming problem in HqlParser
    issue 1180: Fixed intermittent Client-periodic-flush failure
    issue1063: Made Defects-issue783-offload1 test more robust
    Throw exceptions in SerializedCellsReader/Writer on empty row key
    issue1175: Fixed bug when supplying LIMIT with ROW interval

Version 0.9.7.14:
(2013-12-05)

    Fixed buffer overflow in RangeServer when returning large counter values
    Fixed bug in ThriftBroker shared mutator key that prevented sharing
    Use random start time for periodic flushing of shared mutators
    Upgraded to CDH4 version 4.4.0
    Added Hypertable.RangeServer.CellStore.SkipBad property
    issue 1171: Fixed RangeServer::get_statistics() request pile-up
    Fixed QueryCache insert race condition
    Added state logging for issue 1159
    issue 1138: Fixed DELETE bug on specific cell version w/o qualifier

Version 0.9.7.13:
(2013-10-29)

    Fixed crash in ThriftBroker when passing in bad object ID
    Fixed monitoring UI table detail graph rendering for nested namespaces
    Fixed bug in FileBlockCache key computation for offsets >= 2^32
    Fix Hyperspace reconnect if machine suspended; Only perform Master timer ops if Hyperspace session state is SAFE
    Added do_not_cache member to ScanSpec
    Fixed AccessGroupGarbageTracker to avoid repeated unnecessary garbage checks
    Added java counter test
    issue 1160: Throw exception on bad counter column option combinations in schema parse
    issue 1161: Fixed bug in Java SerializedCellWriter.add_delete()
    Cleaned up FragmentData class and added doxygen comments
    issue 1156: When performing GC compaction, measure actual garbage before proceeding
    issue 1155: Throw exception during CREATE TABLE on bad column option combinations
    Fixed potential object ID collision in ThriftBroker
    Added Hypertable.RangeServer.Range.IgnoreCellsWithClockSkew property
    Lazily initialize group commit
    issue 1154: Fixed HQL help text for ALTER TABLE MODIFY

Version 0.9.7.12:
(2013-10-06)

    issue 1151: Fixed phantom range log problem causing commit log from getting reaped
    Fixed scanner leak in ThriftBroker::get_cells* methods
    Fixed recently intro'd bug in ThriftBroker when opening namespace multiple times
    issue 1124: Fixed bug in counter logic causing resets to become increments
    Added compaction TYPE option to COMPACT HQL command
    issue 845: Added ability to change MAX_VERSIONS and TTL with ALTER TABLE
    issue 1152: Eliminated consistency problems on exception during compaction
    Improved maintenance scheduler debug trace
    Fix to recent ThriftBroker change to allow connection pooling
    Increment parent reference count only if fragment is added in CommitLogReader
    Create phantom log in directory _xfer
    Fixed a problem with dumplog --linked-logs
    Got rid of log message in OperationRecover constructor
    issue 1150: fixed bad Hyperspace attr_set assert
    Hyperspace cleanup and doxygen comments
    issue 1149: Got rid of lock contention in AccessGroup::include_in_scan()

Version 0.9.7.11:
(2013-09-24)

    Fixed object leak in ThriftBroker
    Close hints file after read (file descriptor leak)
    Added missing SystemState entity construction in MetaLogDefinitionMaster
    Fixed server registration/recover race condition in Master
    issues 1069 & 1143: Fixed load_range() timeout bug and drop table races
    Retry with verify_checksum if trailer is bad in CellStoreFactory
    issue 1107: Fixed Future::get() API timeout bug
    Fixed Master bug not passing BalancePlanAuthority to MetaLog::Writer constructor
    issue 1147: Fixed consistency problem in relinqish on move_range() exception
    Removed bogus assert in recovery callbacks; Fixed sigstop failover test
    Fixed Hyperspace lost notification bug
    Reorganized Hyperspace source directory layout
    Fixed hyperspace reconnect issues
    issue 1144: Fixed erroneous skipping of transfer log removal
    Added comments to and cleaned up OperationCompact
    Send notification on new server registration or clock skew error
    In Master recovery callbacks, discover proxy via RSC manager if NULL in event
    Added version number to Operation entity plus doxygen comments
    issue 1083: Removed leading '/' in table name in monitoring UI after rename
    issue 1085: Added --nodeps to rpm install in Capfile
    issue 1135: Fixed problem with monitoring shutdown on certain thin versions
    Increased MetaLog historical archive from 10 to 30
    issue 1134: Fixed assert in RangeServer::phantom_prepare_ranges() on big recovery
    Fixed problem of OperationRecover entities spamming the MML
    Added support for .tar.gz package installation in Capfile
    Added hostname to RangeServerConnection display string
    issue 1133: Added HQL help text for .tsv DELETE support

Version 0.9.7.10:
(2013-08-27)

    Better support for Hadoop 2 (CDH4)
    Fixed bug in Master Version rendering in monitoring UI
    Fixed problem with hints file reading
    issue1034: Hadoop 2 - Recover file lease and retry if open throws IOException
    Added Hypertable.Cluster.Name property
    issue 1126: Better handling of bad RSML
    Fixed ambiguity in .tsv DELETE specification
    issue 1128: Fixed RangeServer create scanner crash on bad cell_interval spec
    Minor fix to LocalBroker::posix_readdir
    Removed spurious notification message
    issue1125: Fixed AccessGroup-garbage-tracker test

Version 0.9.7.9:
(2013-08-15)

   QFS Broker
   Improved disk usage monitoring and handling
   Added system state with READONLY variable and HQL SET command
   Changed Hypertable.RangeServer.Range.SplitSize default to 512MB
   Fixed bug in delete processing in MergeScannerAccessGroup
   Fixed CELL_LIMIT processing
   Fixed level calculation in MaintenanceQueue
   Reduced calls to Range::get_maintenance_data() in get_statistics()
   Added version, start_row, and end_row to hints file
   Moved tranfer log to corresponding /tables/ directory
   Fixed race condition in creation of RemoveOkLogs entity
   Changed "dropping task" log message from WARN to INFO
   Fixed race condition in RangeServer-failover-restart test
   Better error state capture for group commit and rs failover basic tests
   Replaced RSStats with LoadStatistics class
   Added server disk usage statistics to RS_METRICS
   Fix tests
   Added PosixReaddir to DfsBroker interface

Version 0.9.7.8:
(2013-07-02)

   Skip recovery of ranges from deleted tables; Other failover fixes
   issue 1088: Fixed connection purging issue in ConnectionManager
   issue 1091: Skip RSML entries if schema for table not found
   issue1094: Fixed race condition in Global::remove_ok_logs initialization
   Can build on more systems
   Fixed malformed path in dumplog --block-summary output
   issue1093: Hypertable shell now opens '/' namespace by default
   issue1082: Changed shell --timestamp-format option from usecs to nanoseconds
   Added missing header files in installation
   Got rid of unnecessary clearing of IOHandler proxy
   Added support for alternate field separator in .tsv format
   Added TableSchema.xsd
   Fix a typo: determinte -> determine
   Capture error state in master-failover tests

Version 0.9.7.7:
(2013-06-03)

   Automatically upgrade table generation during range recovery
   Added missing MML decoding of OperationCompact entity
   Don't decomission handler after propagate_proxy_map() failure
   Added id() accessor method to MetaLog::Entity class
   Batch entity writes in MetaLog::Writer constructor

Version 0.9.7.6:
(2013-05-23)

   Fixed stuck CommitLog purge problem
   Added COMPACT command
   Added NO_TIMESTAMPS option to DUMP TABLE command
   Added hints file to range directory to bootstrap AccessGroup state
   Removed deadlock in Range::create_scanner introduced w/ deferred init commit
   Fixed source server state tracking for consistent MasterClient::move_range calls
   Added "current" set to BalancePlanAuthority serialization
   Fixed MetaLog writer encoded_length/encode race condition
   issue 1068: Fixed race condition in creating IOHandlerData
   Fixed multiple BalancePlanAuthority creation problem
   Fixed bad string create in TTL parsing
   Fixed bug in metalog_dump that prevented it from working on HDFS
   Remove connection from ConnectionManager unconditionally on invalid proxy
   Added methods to BalancePlanAuthority for metalog_tool + doxygen comments
   Fixed "Created DB handles" logging output in Hyperspace
   Added test - ROOT RangeServer failure with cluster restart
   Only set urgent bit on phantom_update if for metadata

Version 0.9.7.5:
(2013-05-03)

   Fixed split row estimation bug (CRITICAL)
   Fixed problem with RPM package
   issue 934: Defer CellStore loading (eliminate METADATA table access on startup)
   Reset state to INITIAL in OperationRecoverRanges on PHANTOM_RANGE_MAP_NOT_FOUND
   Allow mid-recovery servers to be added back into pool of RangeServers
   Added memory tracking to recovery
   Allow MasterClient to be constructed before Master is live
   Fixed RelinquishAcknowledge early expiration bug
   Fixed uninitialized m_recovering member of RangeServerConnection
   Remove pending recover operation for re-connected server
   Fixed master shutdown
   Changed LoadMetadataOnly property to LoadSystemTablesOnly
   Added support for Hypertable.Failover.RecoverInSeries
   Fixed a delete issue caught by AddressSanitizer
   More doxygen comments
   ScanSpec column predicate validation fix
   Removed ReferenceCount base class of IOHandler
   Change name() of OperationRecover to match class name
   Changed ERROR message to WARN
   Fixed llvm build for Mac OSX

Version 0.9.7.4:
(2013-04-24)

   Added periodic reporting during failover replay fragments to prevent timeouts
   Fixed AsyncComm proxy map propagation / connect() order problem
   Capfile changes to facilitate starting/stopping ThriftBrokers independently
   Increased failover timeout to 5 minutes and MaxAppQueuePause to 2 minutes
   Fixed memory errors caught by llvm AddressSanitizer
   Added support for llvm compiler; Fixed warnings reported by llvm
   Doxygen comments
   Removed unnecessary files
   Added doxygen comments to src/cc/Common
   Fixed %preun specification in RPM packaging
   Added --shared-mutator-flush-interval to load_generator
   Eliminated compiler warnings
   Fixed integration test METADATA-split-recovery-11
   issue 1038: Stop connect retry attempts to recovered server (part 2)
   Removed unused files
   issue 1052: removed dependency to log4cpp

Version 0.9.7.3:
(2013-04-09)

   Fixed bug in MaintenanceScheduler preventing merging compactions
   Turn off low memory mode in TimerHandler when no longer low on memory
   Fixed merge run calculation logic
   Fixed epoll initialization error on Ubuntu 12.10
   Improved maintenance scheduler debug output
   Added doxygen comments to src/cc/Common
   Fixed small bug in PHP microblog sample

Version 0.9.7.2:
(2013-04-04)

   Fixed bug in maintenance queue causing worker thread count to drop to 1 over time
   Fixed CellStore concurrency and divide-by-zero problems
   issue 1038: Stop connect retry attempts to recovered server
   Added support for .cellstore.index pseudo-table
   Schedule log cleanup compactions ahead of merging compactions
   Rotate starting point in maintenance scheduler to avoid compaction starvation
   Removed absolute path in jrun script
   Implemented pure virtual function for older CellStore format
   issue 991: added refresh_table to the Thrift interface
   issue 999: needs_compaction bit not getting cleared
   htpkg - don't build thriftbroker-only packages by default
   Maintenance scheduler overhaul; Pause app queue if prune threshold exceeded by 20%
   Improved CommitLog purge break log message
   Only wait for system range recovery in RangeServer::phantom_ methods
   Got rid of exception output for INFO messages (HT_INFO_OUT)
   Removed dependency to log4cpp
   Added doxygen comments to src/cc/Common
   Added Hypertable.RangeServer.Maintenance.LowMemoryPrioritization property
   Finished adding doxygen comments to AsyncComm
   Fixed balance plan server assignment problem
   Fixed hang problem in ~TableScanner on scanner errors
   Fixed handling of missing transfer log directory in PhantomRange
   Fixed problem with explicitly supplied timestamps and TIME_ORDER DESC
   Changed "tar -xjv" to "tar xjv" in Capfiles
   Checked in auto-generated code from recent Thrift changes
   Added two-serial-failover test
   Re-enable load balancer
   Got rid of deadlock in AsyncComm

Version 0.9.7.1:
(2013-02-28)

   Prevent erroneous RangeServer recovery on startup
   Fixed rounding problem in quorum calculation
   Fixed bug in CELL_LIMIT handling
   LoadBalancer no longer assignes ranges to non-existing servers
   Modified upgrade.sh to copy notification-hook.tmpl
   Got rid of doxygen warnings and added more comments

Version 0.9.7.0:
(2013-02-11)

   RangeServer failover
   Added ability to switch Hadoop distros (cdh3 or cdh4)
   issue 958: shell now accepts unicode characters
   Fixed Namespace::open_table race condition
   issue1017: Fixed assert in CS bloom filter creation with small # of keys
   Fixed argument parsing in WikipediaWordCount.java mapreduce program
   Improved split row estimation logic
   Fixed tests by removing .pid files after kill
   issue976: fixed rows+cols bloom filter access with qualifier regex
   Added update_without_index
   Hypertable Shell test no longer fails if it is restarted
   issue 986: catching mapr-specific error code
   issue 974: Thrift clients now verify that ScanSpec is valid
   issue 947: check_integrity no longer fails if a table is empty
   issue 989: do not allow creating indices with COUNTER columns
   issue 972: changed ERROR message to INFO
   issue 970: fixed potential segmentation fault in CommandShell
   Fixed a compiler warning in release mode
   issue 963: fixed thrift framesize property mismatch
   issue 961: fixed SHOW CREATE TABLE with group_commit_interval
   Fixed compiler errors on g++ 4.7.2
   Added Hypertable.RangeServer.Range.RowSize.Unlimited

Version 0.9.6.5:
(2012-10-22)

    issue957: Fixed group commit assert
    issue 942: Fixed metadata-split tests on 32-bit
    Fixed problem of purging RangeServerConnection entries on startup

Version 0.9.6.4:
(2012-09-19)

    Fixed bug in memory reporting introduced with TinyBuffer allocator
    Ensure single RangeServerConnection entity in MML for each connection
    Eliminated conflict with VERSION identifier in SerializedCells*
    issue 923: Fixed RangeServer master initialization error reporting
    Fixed timestamp_max calculation in CellStoreV6
    issue 938: fixed propagation of row overflow error
    Eliminated warnings

Version 0.9.6.3:
(2012-09-10)

    Added missing error code initialization to Result constructor
    Changed CommitLog.FragmentRemoval.RangeReferenceRequired default to false
    Made CommitLog::purge() less chatty
    issue 939: Fixed monitoring system Master version number display
    Remove transfer log when Ranges are deleted due to drop table
    Fixed METADATA split test

Version 0.9.6.2:
(2012-08-30)

    Fixed race condition with ResultCallback m_outstanding counter
    issue 932: thrift framesize is now configurable
    issue 921: fixed escape problem for streaming mapreduce
    issue 922: refresh internal table info when a table was dropped and re-created
    Avoid using hard-coded paths in a java thrift test
    Added a C++ example for SerializedCellsWriter/SerializedCellsReader
    Added a tool to convert all command line parameters to html
    Fixed load_generator's usage of the thrift mutator
    Fixed hql interpreter leak in ThriftBroker
    issue 915: gracefully handle BDB errors when creating transactions
    issue 915: fixed crash in TableMutatorAsync when using an invalid COUNTER value
    ht_load_generator now supports parallel queries
    Couple ByteArena to the RangeDataVector
    Fixed potential access violation when installing new cell cache
    Fixed DUMP TABLE COLUMNS spec to match SELECT
    Fixed documentation bug in CREATE TABLE: the default compression for cellstores is snappy
    issue 910: fixed DELETE handling in combination with row limits
    issue 907: fixed assert in master when replacing a RangeServer with a new machine
    issue 912: fixed deadlock during master shutdown

Version 0.9.6.1:
(2012-08-16)

    Fixed open problem with MapR broker
    issue 892: Fixed intermittend data loss (rare) in balancing-mechanics test
    Fixed FileBlockCache to handle large (> 4GB) CellStore files
    Don't sort block index on load (was causing out-of-order problem on equal keys)
    Fixed issues with HyperPython build and packaging
    issue 914: Fixed problem where Master was writing bad MML entries
    Fixed a test which lacked some error checks
    PageArena improvements for low-memory systems
    issue 835: add --skip-thriftbroker to htpkg
    issue 902: fixing access to uninitialized data when creating RangeServer statistics
    issue 827: fixed deadlock when deleting an index scanner
    issue 409: removed old and unused MapReduce code
    issue 533: fixed VERSION_ADD_COMMIT_SUFFIX if current commit is same as the last tag
    issue 300: removed hardcoded RangeLocator constants
    issue 40: better startup script errors
    issue 908: Fixed IndexOutOfBoundsException in DiscreteRandomGenerator
    Don't link against tcmalloc on mac
    Added csvalidate
    Changes to support Boost 1.50
    Added Scrooge installation commands to build-setup scripts
    Don't include libunwind on 32-bit platforms
    Removed version verification check
    issue 895: Fixed apache_log_load example
    issue 885: BytesWritable writes trailing garbage back to Hypertable
    Support for multiple column predicate added, new op CONTAINS added, bug fixes
    Crash fixed if cell buffer grows
    Got rid of build.xml warnings
    Added process ID to valgrind filename
    Fixed two tests
    issue 880: increased logging output in case of errors
    Fixed build issues on 32-bit and mac

Version 0.9.6.0:
(2012-07-23)

    Fixed zero-length hdfs log file issues
    issue 876: fixed rangeserver crash if request times out
    issue 863: Fixed interference problem with Master/RangeServer init handshake
    issue 884: Fixed problem in CommitLog that caused orphaned transfer logs
    Improved shutdown() to avoid segfaults
    issue 887: Fixed deadlock in Master inside DispatchHandlerOperation
    issue 855: added protocol version to Hyperspace
    Fixed problem that could prevent MoveRange from being removed in Master
    issue 873: bulk atomic counter resets resulting in incorrect values
    Fixed null reference in MapReduce Input class
    issue 866: qualifier index now working with very large result sets
    issue 876: fixed AsyncComm crash when handling expired messages
    Fixed race condition that caused transfer log to be removed prematurely
    Added better error state capture to Balancing-mechanics test
    Java ThriftClient can now specify max thrift frame size
    issue 890: java SerializedCellsWriter add() function should accept at least one cell
    Updating debian dev build setup
    Fixed endless loop when running load balancer with unknown algorithm
    Fixed mutex protection for m_metalog_entity member of Range class
    Added a 'compact' mode to csdump
    Do not generate core file when Hyperspace session expires
    issue 879: added cronolog to ThriftBroker package
    issue 881: added diagnostics output to track load_acknowledge flag
    Display /proc/sys/vm/swappiness in start-rangeserver.sh
    Added libunwind to install and packages
    Fixed two build issues that turned up on 32-bit
    Improved Balancing-mechanics test and fixed brittleness
    Added DfsBroker.DisableFileRemoval property and support in localBroker
    issue 858: created a tool that checks the integrity of a cluster
    Added STOP command to shutdown a rangeserver
    Java Thrift sample now prints cell values instead of ByteBuffer statistics
    issue 869: get_property tool can now print integer properties
    issue 840: upgrade-ok.sh now works with trailing slashes
    issue 851: RangeServer fails to start if METADATA.xml or RS_METRICS.xml is missing
    issue 862: CellStoreFactory now prints messages on error
    Added timestamp and "app queue pause" info to query profile output
    issue 861: added new property Hypertable.Monitoring.Disable to disable rrdtool
    Equal sign is now optional when specifying HQL options
    Fixed uninitialized memory access in MetaLogWriter
    issue 843: fixed hang in qualifier index lookup with CELL_LIMIT predicate
    issue 838: TableMutatorAsyncScatterBuffer used m_timer across multiple operations
    Added support for query profiling (updates) in RangeServer
    Fixed csdump --tsv-format to include header line, timestamp, and escape
    Made dfs file close synchronous in MetaLogWriter
    Added Hypertable.RangeServer.LoadMetadataOnly property
    Fixed link order build issue with libHyperPython
    Changed log message when reading a corrupt cell store
    issue 754: the HQL keyword REVS is now deprecated
    issue 844: libHypertable.so is now properly installed
    issue 841: mop.jpg is now written correctly
    Fixed a bug in the SerializedCellReader test
    issue 842: do not use indices if row interval is specified
    issue 783: balancer now factors in the disk capacities
    issue 833: added newest fields to ScanSpec.java
    issue 823: VALUE REGEXP scan now works with qualifier index
    Fixed spurious failures of test Purge-indices-2
    Modified clean-database.sh to remove mml backup
    issue 828: all HQL statements are now case-sensitive (exit, quit, print...)
    issue 836: add jitter to 'cap hyperspace_status' to avoid hyperspace/BDB deadlocks
    issue 816: serverup now recognizes masters which try to acquire the hyperspace lock
    issue 777: stop-servers.sh can now stop individual processes
    Fixed hang problem on RangeServer shutdown
    Fixed problem with DFS verify_checksum logic
    Fixed monitoring graphs and added ulimit -v unlimited to ht-env.sh
    Fixed NullPointerException in mapreduce/InputFormat
    issue 820: Python bindings for SerializedCellReader/Writer     - added version information     - collapsing duplicat
    issue 822: Removed code that skipped an error
    issue 827: fixed deadlock when scanning secondary indices
    issue 815: remove rrdtool from the installation package
    Replaced links to hypertable.org with hypertable.com
    issue 749: ignore BAD_PATHNAME exception when DUMPing a file in hyperspace shell
    Fixed spurious failures of test Purge-indices-2
    issue 817: fixed handling of DELETE in LOAD DATA INFILE
    issue 727: new config setting HdfsBroker.Hadoop.ConfDir
    issue 731: added new ScanSpec options to hadoop streaming mapreduce
    issue 700: update to boost 1.49
    issue 811: update mml if RangeServer address or IP changes
    issue 812: improved error message if hyperspace replica host names are invalid
    issue 775: replaced readline with libedit
    issue 797: removed old metalog-code
    issue 792: improved thrift tests for perl, python, ruby
    issue 565: added IF NOT EXISTS option to CREATE NAMESPACE
    issue 802: removed unused function
    Fix crash due to ScanSpec copy
    Check for invalid table name characters
    Added minor cleanups and performance improvements
    Modified CellCache to prefer new exact key inerts over old ones; Better FileBlockCache hash

Version 0.9.5.6:
(2012-03-21)

    Added support for secondary indices
    Fixed rowkey-ag-imbalance test (again); Elimated warning
    Added a new test for prefix scans w/ indices
    Improved performance of TableMutatorAsync if indices are used
    issue 701: fixed ambiguous format() call
    Added some missing "prefix qualifiers" assignments
    Added reinterpret_cast to eliminate warning on some platforms
    Fixed HyperAppHelper tests to avoid global destruction order problem
    Fixed shutdown problem
    Eliminated warning in QueryCache.h
    Fixed RangeServer::shutdown(), removed RangeServer::close()
    Fixed RangeServer-rowkey-ag-imbalance regression test
    Fixed bug when collecting data from a temporary index table
    Fixed bug in ScanSpec operator<<(std::ostream function
    issue 793: CREATE TABLE now works with fully qualified table names
    issue 738: SELECT a, a:foo used to ignore all cells without qualifier
    Disable checksum verification for random block reads
    Enable dfs.client.read.shortcircuit in HDFS broker
    Fix ScanContext exact qualifier set
    Graceful shutdown of RangeServer
    Gracefully shutdown Hyperspace
    Use dedicated timer reactor
    Updated to CDH3u3
    LoadGenerator can now generate queries which use cell value index or qualifier index
    LoadGenerator can now read words from text file as cell values
    Fixed a race condition in IndexScannerCallback/IndexMutatorCallback
    Retry bind() call in event of failure in Comm::listen
    Added ability to store _compressed_ blocks in block cache
    Split CellCache into Read and Write caches to minimize contention
    Fixed double-free in IndexUpdater
    issue 444: Moved logic for IGNORE_UNKNOWN_COLUMNS from TableMutator to HqlInterpreter
    issue 779: Fixed upgrade-ok.sh for 1.0.0.0
    Removed an unused function
    Fixed path of rrdtool; now using System::install_dir instead of
    Added CellCacheManager to AccessGroup
    issue 756: Fixed problem with auto-assigned revision number not strictly increasing
    issue 796: Added CellStore V6 with trailer checksum
    Fixed bug in java DiscreteRandomGenerator
    Fixed typos in help text
    Copy Thirft perl module into installation; Fixed Ruby and perl examples
    Removed PHPTHRIFT_ROOT in favor of THRIFT_SOURCE_DIR
    Race condition fixed in TableMutatorAsync
    Fix SendRec comparison operator in TableMutatorAsyncScatterBuffer.cc
    Changed monitoring UI to pull rrdtool from installation
    Added key sanity check to Range::add
    issues 785,776: Fixed METADATA tests; Added default value for Hyperspace.Replica.Workers
    issue 778: use new-style python classes for Thrift API
    Fixed Master SystemUpgrade to re-open metadata_table and rs_metrics_table
    Fixed array write overrun in Range introduced with FLAG_DELETE_CELL_VERSION
    Fixed initialization problem in Client
    Added missing parameter to create_mutator_async() in ThriftBroker
    Only copy PHP files if PHPTHRIFT_ROOT defined
    Fixed circular dependency when building shared libraries
    Fixed Thrift compilation errors due to missing stdint.h

Version 0.9.5.5:
(2012-01-30)

    Upgraded to Thrift 0.8.0
    Issue #760: Changed LICENSE.txt and copyright header in sources to GPL v3
    Added ability to disable block cache; Disabled it for now
    Fixed concurrency problems in TableMutator classes
    Fixed deadlocks in update path
    Fixed race condition leading to deadlock in TableMutator
    Fixed error propagation in scanner
    Only account for QueryCache fill in MemoryTracker
    Fixed BlockCache problem when not enough room to hold block
    Improved response time if TableScanner recovers from RANGESERVER_RANGE_NOT_FOUND error
    More updates to PerformanceTest
    Added missing member initialization to ScanSpec constructor
    Got rid of unused function
    Fixed qualifier regex logic
    Fixed mis-interpretation of CREATE_INTERMEDIATE in Client::create_namespace
    Fixed bug recently introduce in the update path
    issue 773: Removed deadlock in TableMutatorAsync
    Fixed bug recently introduced in PerformanceTest causing value-data file to be null
    Issue #766: cronolog is now packaged into /bin directory
    Issue #734: Removed dependency to librrd
    Added BlockCount field to METADATA table
    Improved integration tests; several tests are now running more reliable
    Added memory mapped CMF data file for Zipfian random number generator
    Issue #484: Added a regression test
    Issue #743: Added function error_get_text which returns a string describing an error number
    Issue #672, #758: Serverup tool now connects to local master instead of the one listed in hyperspace
    PerformanceTest improvements; Got random read tests working
    issue 745: fixed missing dependency problem on mac
    Added additional 3 second clock skew leeway in Master register server
    Made RangeServer::acknowledge_load request URGENT
    issue 754: Added support MAX_VERSIONS <n> (e.g. without '=')
    Modified Hypertable perftest to run over multiple interfaces
    Added missing Thrift Client interface libraries to installation
    Updated Thrift client_test examples to reflect recent API name changes
    Fixed thrift-reconnect-hyperspace test

Version 0.9.5.4:
(2011-12-21)

    Added MapR broker
    Patch to fix hang problem in low memory condition
    Atomically get multiple attribute values in Hyperspace
    issue 744: Renamed thriftbroker package to thriftbroker-only
    Thrift API name changes
    More Thrift API Name changes (hql_ and offer_ to shared_mutator_)
    Fixed segfault on dfsclient with shutdown command
    issue 732: Fix to stop-servers.sh to shut down DFS broker cleanly
    Changed # of maint. threads to max(1.5*disks, cpu_core_count)
    issue 745: Hack to copy missing libintl.8.dylib on mac
    Fixed thrift-table-refresh test (forgot to reflect Thrift API changes)
    More fixes to PerformanceTest code
    Got rid of recursion (and possible stack overflow) in MergeScanner
    Added generate_error_code_doc tool for auto-generating Error Codes docs
    Cleaned up Thrift API Names
    Added elapsed seconds to java vertical progress meter
    Fixed bug in Boost uuid wrapper
    Fixed bug in java String de-serialization routine
    Fix for crash in scan with cell_interval and end_row=0
    Added TIME_ORDER DESC markdown documentation
    issue 728: Use Boost UUID generation libaray

Version 0.9.5.3:
(2011-11-21)

    Added support for OFFSET, CELL_OFFSET
    Fixed bug in TableInfo
    Fixed bug in Monitoring class where the last and current server sets were incorrectly compared.
    Added support for TIME_ORDER DESC and HyperAppHelper::create_cell_unique for the PHP microblog sample
    Added support for chronological timestamps and unique values
    Andy's Hyperspace performance improvements
    Added support for .tar.bz2 to install_pkg Capfile task
    Changed Mac package name to include OSX version number
    Fixed missing library dependency on Mac OSX Lion
    Added OFFLOAD algorithm to basic load balancer, to move ranges of a list of servers.
    Updated performance test with latest HBase and Zookeeper
    Added regression test for issue #719
    Fixed issue #720: LOAD DATA INTO FILE now skips empty values
    Fixed CELL_LIMIT_CF prob in ThriftBroker; Updated documentation
    Prefetch schemas from Hyperspace to speed up local recovery in RangeServer
    Fixed issue #718 - cpp thrift client is now installed in /lib/cpp

Version 0.9.5.2:
(2011-10-24)

    Fixed bug in balancer that caused Master crash on pre-existing DBs

Version 0.9.5.1:
(2011-10-17)

    Added Snappy compression, made it default for CellStores
    Upgraded to Thrift 0.7.0
    Upgraded to Hadoop CDH3u1
    Added CELL_LIMIT to ScanSpec and SELECT command
    Renamed CELL_LIMIT to CELL_LIMIT_PER_FAMILY
    Made range split size random value SplitSize + (RamdomNumber % SplitSize)
    Fixed bug in RangeServer::local_recover()
    Added check for clock skew in OperationRegisterServer
    Added CPU statistics to range server monitoring graphs
    Fixed bugs in Balance operation.
    Fixed bug in LoadBalancerBasic.
    Changed TableInfo to store range start and end row.
    Fixed bug in RangeServer, whereby it was possible for it to incorrectly return TABLE_NOT_FOUND.
    Fixed performance test Capfile so that Client can run on same machine as Master
    Added support for pulling value data from file in PerformanceTest
    Added dependent libs to fix missing shared object problem on Debian
    Added scripts for setting up build env on CentOS, Debian, and OpenSUSE
    Added new switch --namespace to the shell to automatically open a specified namespace
    Fixed command line parameter -h which failed to display the help page
    Fixed a compiler warning about missing parentheses
    Fixed a typo when calling 'help' with an unknown argument
    use getenv() instead of _ENV, since _ENV can be disabled in php.ini
    Modified Range class to prevent further maintenance if relinquished
    Added in_operation bit to master.
    Fixed monitoring diff calcuations, only compute if server set same as previous
    Changed the balance trigger on the master.
    Changed RangeServerConnection state member to include BALANCED bit
    Made OperationBalance a perpetual operation.
    Added FailureInducer label to crash the master in the middle of executing a balance.
    Added automatic update coalesce
    Separate controls in Capfile for stop and clean prompt; Dropped countdown
    issue 706: Fixed initialization problem of Range member removed_from_working_set
    Changed a misleading error message.
    Added Ajax counter which displays the number of new tweets. Also improved error reporting if HT is not running or no
    issue 696: patch to previous fix
    issue 704: fixed intermittent CellStore-garbage-collection test failure
    Set default # of maintenance threads to 1.5 * number of drives in system
    Changed commit log compressor back to quicklz
    Got rid of BLOCKED state in Master operations in favor of blocked bit
    issue 696: Fixed race condition in Master handling of relinquish acknowledge
    Fixed monitoring rate calculation problem when get_statistics fails on some RSs
    Added initial revision of the microblog php sample to the reporitory
    Added table id to error message
    Added cell_limit and cell_limit_per_family to Thrift ScanSpec operator <<
    Future cancel individual scanners/mutators test added
    Future issues fixed
    Added ThriftBroker APIs cancel_mutator_async(mutator) and cancel_scanner_async(scanner)
    Thrift API change. Removed flush argument from close_mutator call
    Changed default compressors to snappy
    Don't remove monitoring data in clean-database.sh
    Fixed possible problem with request timeout calculation; Added bettter logging
    Changed exception and api call logging in ThriftBroker.
    Fixed bug in snappy codec
    Got rid of arrival_clocks in favor of arrival_time in Comm layer
    Fixed shutdown hook in HdfsBroker
    Changed exit calls to _exit to prevent core dumps on async abrupt end tests
    issue 691: During relinuish, if range removed from live set, set flag to prevent re-removal
    Added property Hypertable.RangeServer.IgnoreClockSkewErrors to make RangeServer ignore clock skew errors.
    Fixed a PHP warning because of an undefined variable (E_NONE)
    Fixed library paths and names on Ubuntu 11.04 64bit
    Removed a PHP warning if an environment variable is not set
    Eliminated warning
    Added regression test for balance operation when a new rangeserver is added.
    Minor thriftbroker issues fixed
    Fixed bug in TableScannerAsync
    Enhanced FailureInducer to support throwing arbitrary exceptions.
    Added FileUtils::mmap and use it to map source file in load_generator
    Merging Sanjit's regex patch
    Dropping tables before creating them; otherwise test fails if they already existed
    Fixed wrong event timeouts on 32bit linux: clock_t is signed long but was compared against unsigned int. Also beauti
    Refactored MergeScanner and split in two classes: MergeScannerAccessGroup and MergeScannerRange. No functional chang
    Fixed intermittent NULL pointer dereference in master recently introduced
    Fixed progress meter logic for large datasets (>4GB)
    Copy libsnappy into installation
    Fixed linker errors on ubuntu 11.04/cmake 2.8.3: thrift files were generated but neither compiled nor linked
    Fixed sigar detection: link against ldl on Linux
    Added missing files for snappy integration
    Added support for google's snappy compression library
    fixing more warnings about macros used with empty arguments
    fixed warning about empty macros
    fixes for ubuntu 11.04 (32bit)
    always link with -ldl
    Plumbed CELL_LIMIT_PER_FAMILY through ThriftBroker
    Added version info to monitoring UI; Removed hardcoded monitoring dir reference
    Reorganized library layout.
    Added four levels to Maintenance queue to allow METADATA to be handled before USER, etc.
    Fixed intermittent test failures
    Fixed intermittent prune_tsv test failure
    Added cmake support for BerkeleyDB 5.2
    issue 688: Set proxy name member for comm layer TIMEOUT events
    Added DUMP command to Hyperspace shell.
    Made change to ThriftBroker to flush asynchronous mutators if there is enough to flush.
    fixes to_full_key if FLAG_DELETE_ROW has been specified
    - support bdb 5.2 (replication API changes)
    Andy's patches for a few 0.9.5.0 issues.
    Enabled use of DFS replication factor.
    Added config param Hypertable.Master.Split.SoftLimitEnabled (true by default).
    Fixed minor compilation issue
    [Issue 640] Fixed  Have "cap cleandb" prompt for confirmation
    issue 685: Changed assert to exception throw
    Fixed issues 678 & 679 (assert in LoadBalancerBasicDistributeLoad and TableMutatorAsync)
    Added latency measurment to Thrift API logging
    Added support for -DPACKAGE_OS_SPECIFIC=1 cmake flag to build OS specific packages
    [issue 661] Fixed ThriftBroker dies on RangeServer exception
    [Issue 641] Create CellStoreBlockIndexArray and make it default. Implemented
    Fixed CellStore-garbage-collection test on mac
    Eliminated warning
    issue 657: Fixed rs_metrics_table initialization problem
    Fixed tcmalloc heap introspection call on 32-bit systems


Version 0.9.5.0:
(2011-07-24)

    Added Asynchronous Mutators
    Added Load Balancer    
    Fixed RSML write race condition on shutdown
    Added FLAG_DELETE_CELL_VERSION to allow a specific version of a cell to be deleted.
    Fixed problem with COUNTER support in MergeScanner causing corrupt keys
    Fixed CellStoreV5 memory tracking
    Fixed ApplicationHandler leak on timeout; RangeServer.Scanner.Ttl default to 1800s
    Fixed Event object leak in Comm layer
    Improved CellStore memory tracking; Fixed merging compaction scheduling; dropped MIXED prioritization
    Added CellStore count monitoring graph for RangeServers
    Added scanner_count graphs to monitoring interface
    Added heap_size, heap_slack, and tracked_memory RangeServer monitoring graphs
    Fixed bug in RangeServer where the server would crash while processing some queries.
    Fixed bug whereby TableMutatorAsync timeout errors were being dropped.
    [Issue 527] Partially implemented. Thrift API partially incomplete
    Added paging statistics graphs to RangeServer monitoring page
    Fixed support for DELETE records in LoadDataSource.cc
    Fix to unacknowledged move cache patch
    [issue 637] Fixed: problem with delete cell with timestamp
    Fixed a couple of minor bugs in metalog_dump tool.
    Added METADATA SYNC command to rsclient
    Added assert(timeout!=0) in Comm layer; Added/Improved some log messages
    Added Hypertable.LoadBalancer.Enable property to allow for disabling balancer
    Added removal of Range entity from RSML at end of relinquish operation
    Added support for move compactions; Added COMPACT command to rsclient
    Added unacknowledged_move cache to Master to avoid repeated move
    Made changes to LoadBalancer to ignore RangeServers that are not live yet.
    Reduced Range split size for Balance-Mechanics tests to avoid running out of file handles.
    Improved bloom filter regression tests
    [issue 285] ThriftBroker requires a restart after hypertable server processes are restarted
    Skip over RS_METRICS entries where version != 2
    Fixed SystemInfo network rx/tx calculation
    issue 639: Changed sort order to be numeric on RangeServer Monitoring page
    Fixed race condition in TableMutatorAsync as well as bug in async_api_test.
    Fixed couple of minor test issues.
    Modified LoadMetricsRange to delete entries for "old" range after a split.
    issue 630: use hostname instead of IP on RS page; Improved graph colors
    Improved merge algorithm by merging long runs of CellStores < TargetSize.Minimum
    Added complete AccessGroup information to RangeServer::dump
    issue 636: Fixed bogus RangeServer shutdown error message
    Eliminated superfluous memory allocations during log replay
    Added --heapprofile to start-rangeserver.sh
    Fixed a couple of uninitialized memory references
    Fixed bug in ScanSpec end_row specification.
    Changed default value of Hyperspace.LogGc.Interval to 10 mins instead of 1 hr
    Fixed couple of possibly buggy comparisons in TableMutatorAsync code.
    Added completed method to ResultCallback so applications can be notified when outstanding async calls are complete.
    Added "heapcheck" command to RangeServer for dumping heap stats
    Fixed race condition in TableMutatorAsync code.
    Added stop_monitoring and start_monitoring cap commands.
    Removed over-aggressive assert in TableMutatorAsyncDispatchHandler destructor.
    Fixed a couple of warnings
    Make Monitoring class map servers by location instead of id
    If RangeServer.ProxyName equals "*" generate Location name using hostname+port
    Added balancing mechanics
    Minor fix to Thrift future calls.
    Replaced TableMutator code with new mutator code based on TableMutatorAsync

Version 0.9.5.0.pre6:
(2011-06-03)

    Fixed bug in MaintenanceScheduler introduced w/ merging compactions
    Fixed bug in the FileBlockCache wrt growing to accomodate
    Added support for DELETE lines in .tsv files
    Added check for DFSBROKER_BAD_FILENAME on skip_not_found
    Added --metadata-tsv option to metalog_dump
    Fixed bug whereby get_table_splits() was returning stale results for previously dropped tables.
    Added MaintenanceScheduler state dump via existence of run/debug-scheduler file
    Fixed FMR in TableMutator timeout

Version 0.9.5.0.pre5:
(2011-05-18)

    Changed Group Commit table hash_map to ordered map and fixed memory leak
    Upgraded Hive jars to CDH3U0 distribution.
    Added support for Hypertable.RangeServer.CellStore.TargetSize.Minimum
    Fixed compaction maintenance staging skip for non-minor compactions
    Fixed split-merge-loop10 and ac-garbage-compaction tests
    Set NO_LOG_SYNC in HqlInterpreter unconditionally for LOAD DATA INFILE
    Cleaned up MapReduce job conf properties and Fixed ROW interval spec
    Auto-increase block cache size to accomodate query load
    issue 618: Fixed NULL pointer dereference in AccessGroup::run_compaction
    Added Hypertable.RangeServer.BlockCache.MaxMemory config property
    Strip base filename from scan files in METADATA Files column
    Upgraded apache_log and freebase examples to use post namespace API.
    Fixed inconsistency in timestamp parsing between LDI and Hql shell insert command.
    Andy's EnsureUnused patch (disabled by default)
    Fixed FindRRDtool.cmake to work on mac

Version 0.9.5.0.pre4:
(2011-05-01)

    [Issue 617] Fixed Superfluous RangeServer::create_scanner() request when scanning over exact range
    Removed benchmark tasks from Capfiles, added Capfile.benchmark
    Added support for ScanSpec in Hadoop streaming mapred
    Added hostname to AsyncComm proxy map
    issue 528: Allow embedded semicolons in HQL string constants
    Added optional support for jemalloc
    Fixed bug in scanner which causes assert when a scanner hits row limit and receives results from a cancelled scanner
    Missed checkin of auto-generated java code
    Fixed CellStore GC regression; Added test
    API Change: Made Table objects auto-refresh schema by default
    Added more info to RS_METRICS (including disk_bytes_read)
    Support for optionally including master location hash into RangeServer proxies
    Added support for IP addresses to be used as Hyperspace.Replication.Host strings.
    Added is_ipv4() method to InetAddr to test if a string is an ip addr in the n.n.n.n format.
    Fixed MergeScanner bug which failed to use MAX_VERSIONS filter correctly when value regex was used.
    Added '\0' escaping/unescaping to SELECT, DUMP TABLE, LOAD DATA INFILE
    Removed trailing slash on exclude hyperspace in Capfile rsync commands
    Added Hyperspace.Client.Datagram.SendPort property (default=0)
    Fixed bug in scanner timeout logic. Timers were not being reset correctly in between calls.
    Removing dependency on BerkeleyDb libraries in Hyperspace client library.
    Fixed Capfile install/upgrade tasks to work with standalone installs
    Fix for rounding error in LOAD DATA INFILE timestamp parsing
    Fix for KEYS_ONLY scan
    Fixed bug in MergeScanner logic.

Version 0.9.5.0.pre3:
(2011-04-12)

    Modified stop-servers.sh to stop master and rangeserver iff client progs exist
    Upgraded to CDH3u0
    Fix for recent ensure unused physical memory patch

Version 0.9.5.0.pre2:
(2011-04-11)

    Ensure amount of unused physical memory for RangeServer
    Fixed scanner deadlock when RangeServer dies or throws exception in create_scanner request.
    Fixed ThriftBroker timeout problem; Removed default value for ThriftBroker.Timeout
    Added --nomd5 option to rpm command
    Got rid of role for install tasks in Capfiles
    Fixed bug which causes assert when error message length > int16_t limit.
    More Capfile changes.
    Changes to Capfile. Replaced "dist" task with "install" and modified "upgrade".
    Lazily create RangeLocator in RangeServer
    Fix for recent changes to ApplicationQueue
    Fixed bugs in TimeInline parse_ts function; Added regression test
    Fixed problem with recent changes to ApplicationQueue
    Put shell into "batch mode" when commands supplied with --execute
    Set default RangeServer work thread count back down to 50
    Modified ApplicationQueue to create thread on urgent task if all busy
    Added server-side timeout during initialization; Increased worker threads
    Fixed RSML upgrade logic
    Fixed problem with SystemInfo::DiskUsage computation
    Issue 598:  Common-properties and Common-init tests failing on some platforms. Fixed.
    Fixed shutdown problem with TableMutatorIntervalHandler
    Fixed Range load_acknowledged problem when upgrading from pre-0.9.5
    Fixed release string verification regex; Added print functions for MaintenanceData
    Fixed hang problem with serverup dfsbroker
    Fixed some bugs with recent monitoring changes
    Fixed RangeServer freeze during initialization with low memory condition
    Fixed typos in VersionHelper.cmake
    Fixed MasterClient-TransparentFailover test
    Fixed some issues with monitoring graphs
    Fixed bug in Future class.
    Use existing app queue for metadata/metrics table
    Added "Range Count" to range server monitoring table
    Fixed low memory freeze problem
    Stopped Master GC from adding unnecessary deletes into METADATA table
    Made RangeServer print error and exit on listen error
    Fixed bug in ScanCells interface whereby it was possibly to dereference a null pointer.
    Fixed monitoring bug, changed installation dir from "0.9.4.3" to "current"
    Fixed problem resulting from lost load acknowledge response
    Fixed bug in future_abrupt_end_test.
    Fixed Master DispatchHandler outstanding tracking
    Fixed deadlock in scanners.
    Fixed bug in scanner logic.
    issue 585: Copy new METADATA.xml and RS_METRICS.xml in fhsize.sh
    if on startup MML is empty and /sys/METADATA exists, don't try to create it
    Fixed shutdown order sequence
    Fixed RangeServerConnection state persistence problem
    Updated CHANGES file for 0.9.5.0.pre release
    Fixed scanner bug where once a scan was cancelled scanners were being set current out of order.

Version 0.9.5.0.pre:
(2011-03-24)

    Master overhaul
    MetaLog overhaul
    Asynchronous Scanner API
    Upgraded to Thrift 0.6.0
    Upgraded to CDH3B4
    Added sys/RS_METRICS
    Fixed bug in monitoring system that was calculating buggy Cell and Byte read/write rates.
    Added METADATA-split master failover tests
    Added MasterClient-TransparentFailover test; fix bugs that turned up
    Added VERSION_MISC_SUFFIX to version string for 0.9.5.0.pre release.
    Added delete_count to CellStoreV5Trailer which stores the number of delete records in the CS.
    Added list of replaced files to CellStoreV5.
    Fixed soft_limit regression
    Fixed intermittent test failues due to exit(); Got rid of valgrind warnings
    Added two-phase master requests
    Fixed warnings
    Upgraded version number to 0.9.5.0
    Cleaned up prune threshold limits; Got rid of warnings
    Fixed deadlock in ResponseManager
    Fixed data loss bug - made CommitLog close synchronous; fixed async scanner bug
    [Issue 579]  metalog backup verification causing intermittent test failures. Fixed
    Added regression tests for stopping synchronous and asynchronous scanners abruptly before scan completes.
    Fixed deadlock in TableScannerAsync code.
    Added needs_compaction flag to RangeServer::load_range method.
    [Issue 578]  Deadlock in async scanner. Fixed
    Added ht_master_client shell program with shutdown command
    Fixed hyperspace-reconnect test
    Fixed monitoring server initialization problem
    Minor fix to dot jpg file generation.
    added start_time,end_time as http query params
    Close cell store file before removing directory
    Create <data dir>/run folder if required
    Fixed a bunch of minor issues.
    [Issue 577]  RangeServer::commit_log_sync should respect group commit. Fixed
    Added regression tests and bug fixes for Future API.
    Performance and functional bug fixes to TableScanner class.
    Implemented changes to C++ and Thrift clients to support asynchronous scanners. -TODO: add tests for Php and Python 
    Fixed a bug that was causing the METADATA-split-recovery test to fail intermittently.
    issue 552: Ensure Hyperspace handles get closed; Naming cleanup
    Fixed incorrect CellStoreTrailerV5 version check caught by assert
    Added CellStoreV5; Monitoring system improvements (avg. key & value size)
    added new column to table stats
    Added file_count to StatsTable; Fixed compression ratio computation
    Got rid of read_ids flag in Schema parse API
    "changes to header labels"
    Monitoring UI Changes, Sorting options for stats summary
    Updated clean-database.sh script to reflect new rsml backup location
    added invalidate methods for table name changes
    bunch of changes to Monitoring UI changes (reading from json and got rid google graphs which gives summary) Added Ta
    Fixes to monitoring & stats gathering
    Fixed bugs caught by Andy Thalmann (ScanContext copy ctor bug)
    added table names to json , removing unnecessary code
    Fixed minor monitoring/stats gathering bugs
    issue 563: fixed METADATA split test
    bunch of changes to Monitoring UI changes (reading from json and got rid google graphs which gives summary) Added Ta
    Added Hypertable.RangeServer.CellStore.SkipNotFound
    issue 559: Prevent transfer log from getting linked in twice
    issue 552: Ensure Hyperspace handles get closed; Naming cleanup
    [Issue 505] Client-no-log-sync regression failure
    issue 537: Fixed RangeServer shutdown hang
    issue 542: Only write last-dfs file if it doesn't exist
    issue 544: Set default RangeServer memory limit to 50%
    issue 553: Schema HQL render wrap table name in quotes if necessary
    issue 545: Reduced random-write-read test to 1/5 the size
    [Issue 551] Upgraded to QuickLZ 1.5
    Fixed bugs related to MasterGc and live file tracking
    Renamed MoveStart and MoveDone RSML operations to RelinquishStart and RelinquishDone.
    Made changes to BalanceStarted/Done and RangeMoveLoaded/Acknowledged MML entries.
    Added code for additional MML entries.
    Changed MasterMetaLog to garbage collect entries during recovery.
    Added MoveStart and MoveDone RSML entries.
    Changed RangeServerMetaLog to garbage collect entries during recovery.
    Fixed rare bug that caused root range corruption
    issue 547: Found and fixed more race conditions
    Fixed excessive maintenance scheduling during low memory condition
    Fixed deadlocks uncovered recently
    Fixed race cond in drop_table; Fixed RangeServer::update bug
    Changed DfsBroker.Local.DirectIO default to false
    Fixed some stats gathering issues discovered in sys/RS_METRICS
    issue 531: Fixed bug in load_generator that caused intermittent drop of last cells
    Added RangeServer::relinquish_range() (with RSML update code stubbed out)
    Added Hyperspace::Session::open() method with no callback; code cleanup
    Use "scanned" cells/bytes for load metrics; Added paging info to load metrics
    Fixed recently introduced "bad ProxyName" problem
    Do not reduce the limit below the minimum
    Scan and filter rows fix and optimization
    Config property "Hypertable.RangeServer.LowMemoryLimit.Percentage" has been added
    Added disk_used, disk_estimate, and compression_ratio to StatsTable
    Fixed revision number problem in CommitLogReader with link entries
    Renamed Master::report_split() to Master::move_range()
    Added MML
    Fixed monitoring stats; fixed JSON output for RS summary
    Monitoring overhaul part 1
    new rangeserver stats
    changes to use new rangeserver summary data
    Destroy comm has been fixed
    HQL scan and filter rows option added
    Logic changed to setup row intervals in case of scan and filter rows
    Optimization for scan and filter rows
    Scan and filter rows has been implemented (Issue 525)
    check for negative resolution
    issues with config
    Added resolution param to rrd page
    Fixed monitoring stats; fixed JSON output for RS summary
    Monitoring overhaul part 1
    Check for zero-lengthed row and skip in LoadDataSource
    Allow NULL strings to be passed into FlyweightString
    Fixed bad memory reference in RangeServer::FillScanBlock
    cleanup has been added
    Added prepend_md5 tool
    Redirect thrift output to HT logger
    Assignment operator added
    Support empty qualifier filtering
    Recursive option added to the hyperspace readdirattr command
    Recursivly option added to the hyperspace readdirattr command
    Include sub entries for get_listing/NamespaceListing, readdir_attr/DirEntryAttr
    Fixed syntax error recently intoduced into Ceph broker code
    Added StrictHostKeyChecking=no to rsync
    Added regexp filtering to DUMP TABLE command.
    Added optimization for row and qualifier regex matching.
    Added script to compare test runs times and detect potential performance regressions.
    Cleaned up SELECT [CELLS] Hql command.
    Removed DfsBroker.Host from default hypertable.cfg; Cleaned up DFS Port properties
    Fixed bug in Hyperspace caused by Reactor thread directly calling BerkeleyDbFilesystem on disconnect.
    Improved Master handling of already assigned location in register_server
    Fixed performance regression in ScanContext by using set instead of hash_set for exact qualifiers


Version 0.9.4.3:
(2010-11-15)

    issue 534: Made RangeLocator thread-safe
    MetaKeyBuilder crash with nested namespces fixed
    Got rid of spurious "Connection refused" error messages
    Decreased default bucket count to 20 for DUMP TABLE
    Added group commit
    Added regex filtering on ROW, COLUMN FAMILY, and VALUE
    Modified Capfiles to start ThriftBroker on master
    Added code to catch BAD HEADER LENGTH exception in IOHandlerDatagram
    Fixed unprotected access to Range stats data
    Changed regexp members of ScanSpec to use memory arena
    Added more documentation about how to LOAD DATA INFILE from stdin
    Added support for filtering by qualified column and remove restriction of HT rowkey==first col in Hi
    Added the ability to set multiple column qualifier filters for a given column family.
    Added retry logic to LiveFileTracker::update_file_column. -Added regression test, commented out for 
    issue 247: Added methods to RangeServerClient that accept Timer
    Fixed bug in AsyncComm poll() mode
    Evaluate --hyperspace host:port argument
    Fixed problems in MetalogRangeServer and FileBlockCache tests (Andy Thalmann)
    Fixed bug in SerializedCellsReader; Added more test scripts
    Toplevel directory added
    Added parallel INCR test to PerformanceTest; Increased ThriftBroker timeouts
    Added instrumentation to group-commit tests; Fixed TestHarness
    Lazy fix for issue 530
    Crash fixed (happens for MutatorNoLogSyncTest)
    Close open file handles before delete file
    Hypertable.DataDirectory (Hypertable data directory root) configuration parameter added to the Defau
    Added RE2 dependency to PackageHelper
    Added API support for row, value and column qualifier regexps. -Added API support for row, value and
    Added dependency & cmake check for RE2 regex library.
    Fixed error in CREATE NAMESPACE documentation


Version 0.9.4.2:
(2010-10-26)

    Upgraded to Thrift 0.5.0
    Added COUNTER type column family.
    Fixed potential deadlock in periodic mutator code path.
    Added missing rrd dependencies to packages
    Pulled in Trent's fix for null values in TextTableInputFormat and InputFormat.
    Support for cell flags (FLAG_INSERT, FLAG_DELETE_*) in thrift serialized cells
    Make use of existing Common/endian-c.h
    Read and set timeout for thriftbroker
    Added optimization to increment CellCache counter in place
    Updated PerformanceTest added support for increment
    Fixed problem with IF EXISTS option to DROP NAMESPACE
    Added clean task as dependency to jar task.
    issue 518: Trim whitespace to avoid HqlParser error
    issue 517: compilation problem with VERSION constant in CommHeader
    issue 515: prevent PHP error reporting from being enabled unconditionally
    Fixed ThriftBroker crash when opening bad namespace
    Added resolution param to rrd page


Version 0.9.4.1:
(2010-09-23)

    issue 516: fixed Table::get_name()
    Monitoring README fix.
    shell script changes
    Removed config.yml.in Changes to start script.
    changes to config.yml
    using thin server now, fixed config.yml data dir issue, added progress bar on graphs page
    Modified Monitoring UI start/stop scripts.
    Fixed bugs in Hive extension introduced by thrift 0.4.0 byte[] -> ByteBuffer change.


Version 0.9.4.0:
(2010-09-08)

    Added Namespaces
    Added AG garbage collection logic for MAX_VERSIONS, deletes, and TTL
    Hypertable Monitoring web interface using sinatra
    Made changes to garbage collect unused Hyperspace BerkeleyDB logs.
    Upgraded to Thrift 0.4.0
    issue 501: Made Capistrano "upgrade" task first verify that upgrade is OK
    issue 440: Renamed CellFlag to KeyFlag; Renamed put_ methods to offer_
    issue 504: Store relative filenames in METADATA
    Added RENAME TABLE feature.
    issue 479: Added support for configurable toplevel directory name
    issue 174: Changed all state file/dir names to include table id instead of name
    Modified capfile to start and stop monitoring server on master.
    Updated location of monitoring UI code.
    Modified start and stop scripts for Monitoring UI
    Made changes to print out ProxyMap to text file to be used for the Monitoring UI.
    Fixed string encoding/decoding problem in Java code
    Fixed stats gathering logic to handle variable length string table ID
    issue 316: Moved CREATE TABLE options to the end after column defs
    issue 487: Fixed Comm layer core dump with many client connections
    issue 496: Fixed bad logic in EINTR handling
    Changed namespace "SYS" to "sys"
    issue 497: fixed problem of column qualifier not getting cleared in Thrift API
    issue 11: Use shorter cellstore filenames. Fixed
    Added hypertable shell regression test for namespaces. Updated some documentation.
    Namespace Client API changes.
    issue 174: Changed all state file/dir names to include table id instead of name
    issue 234: Propagate better error messages from DfsBroker to RangeServer log
    issue 106: Use JAVA_HOME to find java binary, if set
    Got rid of verbose logging from recent AG garbage collection change - Also changed Hypertable.RangeServer.AccessGrou
    issue 479: Added dual-instance regression test
    Changed semantics of readdirattr and readpathattr Hyperspace commands
    Added NameIdMapper class.
    Made changes to store next table id in Hyperspace..
    Added Hyperspace readpathattr API to list the value of an attribute for all components in a path
    Added Hyperspace attr_incr API to atomically increment an attribute.
    [Issue 148] hql parser doesn't like quotes inside a string even when escaped. Fixed.
    [Issue 481] ThriftClient-reconnect-hyperspace failure. Fixed.
    [Issue 491] core dump at get_ts64() of Time.cc. Fixed
    [Issue 488]  Hyperspace crash. Fixed
    [Issue 492] RangeServer crash. Fixed
    Fixed bug in Master stats collection.
    Made changes to checkpoint BDB every time there is 1M worth on uncheckpointed log data.
    Minor fix in FindRRDtool.cmake
    Don't link Hyperspace.Master to tcmalloc for 32-bit

Version 0.9.3.4:
(2010-07-15)

    Switched to CDH3; Made Ant and Thrift required
    Updated some auto-generated files for new version of thrift
    Updated HqlHelpText with CELL_LIMIT feature info.
    Don't link ThriftBroker with tcmalloc on 32-bit
    Added support for newer versions of Boost
    Minor fixes to monitoring code.
    Added cell_limit feature to scan/select queries.
    Fixed link problem with serverup on Mac OSX
    Added dependent RRD libs to install

Version 0.9.3.3:
(2010-06-23)

    Fixed bug in fhsize.sh; Added fhsize task to Capfiles - Load libthrift jar file to CLASSPATH first
    Minor fixes to namespace violations and use Table name in place of ID for monitoring.
    Fixes to mapred Input/Output formats
    Added upgrade task to Capfiles
    Made changes to monitoring system to print Table name as well as ID.
    Hypertable-Hive connector.
    More tuning based on perfeval test1 results
    Changed ThriftBroker threading model to threaded instead of thread pool


Version 0.9.3.2:
(2010-06-12)

    Changed some defaults based on perf tests
    Added range readahead in IntervalScanner - Report info about actual data read in Performance test driver
    Upgraded to thrift-0.3.0-rc4 from http://people.apache.org/~bryanduxbury/thrift-0.3.0-rc4.tar.gz
    Initial version of Monitoring application
    Fixed Sigar library name for OSX.
    Modified Thrift get_schema API to return Schema object and added get_schema_str API
    Fixed TableSplit.java to lookup hostname for location since Hadoop doesn't understand IP addr
    issue 356: Record DFS is run/last-dfs file and report error if mismatch
    Fixed race condition in Master::get_statistics()
    Fixed timeout problems with ThriftClient
    Fixed compile problem in ThriftBroker;  Added run-benchmark.sh script
    increased transfer buffer
    Added support for Zipf, report output file, etc.
    Added rrd library to install; Fixed race condition in Client table caching
    Increased interval scanner readhead buffer size 5x512K
    Fixed bugs in ThriftBroker next_cells_serialized and next_row_serialized APIs
    Added next_row_serialized API to ThriftBroker.
    Added system wide stats like #cores, disk , mem utilization, load avg to monitoring stats.
    Added code to blow away monitoring dir when clean-database.sh is run.
    Added PerformanceTest benchmark framework - Switch ThriftBroker to TThreadPoolServer on linux - Added _serialized me
    Added support for DIRECT I/O
    [Issue 464] Add refresh_mutator API. Added refresh_shared_mutator API to Thrift interface
    [Issue 86] Monitoring.
    Added Master maintenance timer
    Fixed circular dependency in build.
    issue 414: added thriftbroker and spare Capistrano roles - Also included DfsBroker in the hypertable-thriftbroker pa
    added the ability to specify start/end row with streaming fixed the handling of splits with regards to maps
    Added Hypertable.RangeServer.Scanner.BufferSize
    Set key_compression_scheme propery in CellStoreV3 trailer
    issue 427: Added expiration_time and expirable_data to CellStoreTrailerV3
    issue 149: Added prefix key compression to CellStore (v3)
    [Issue 259] LDI should be able to load data from DFS. Updated documentation.


Version 0.9.3.1:
(2010-04-14)

    added support for map reduce streaming
    Fixed prune_tsv to work with DUMP TABLE format, added regression test
    issue 449: Remove fhsize from RPM and DEB post-install
    [Issue 448] Hypertable shell trying to connect to DFSBroker. Fixed.
    issue 439: Strip duplicate cells during scan
    issue 443: Check for invalid ':' character in column family names
    issue 442: Escape/unescape row key and column qualifier
    Added Dfs support to DUMP TABLE command.
    [Issue 416] Commands taking long time to run. Fixed
    [Issue 420] Incorrect checking of errno after calling FileUtils:: function. Fixed
    issue 436: Fixed problem causing full table scan for each split
    issue 408: Fixed problem where scanner didn't propagate revision number
    issue 430: Fixed STL comparator semantics
    issue 385: Made REPLICATION factor configurable per-table and access group
    [Issue 175] HQL parser getting confused on INSERT of 4-digit row key. Fixed.
    issue 124: Documented LDI options IGNORE_UNKNOWN_COLUMNS and DUPLICATE_KEY_COLUMNS
    issue 260: Display useful error message when LDI HEADER_FILE not found
    issue 419: Fixed race condition in Comm::connect HandlerMap access
    issue 421: Fixed Free Memory Read bug in ProxyMap
    [Issue 395] Client-no-log-sync test fails intermittently. Fixed
    [Issue 381] HqlInterpreter::execute(...) pass reference to output parameter.
    issue 378: Added escaping of '\' in addition to \n and \t
    issue 423: Fixed MetaLogDfsBase::get_filename()
    issue 424: Added destructor to MetaLogReaderDfsBase to close file handle
    issue 402: Lazily load CellStore block index for faster startup time
    Fixed warnings on Linux x86_64 gcc 4.1.2
    [Issue 259] Checked in changes to allow LDI and SELECT to read/write from/to  DFS.
    issue 136: Fixed bug in DfsBroker ClientBufferReaderHandler
    issue 403: fixed Coverity bugs
    issue 417: Allow quoted table names in INSERT command - Added regression test (verifies issue 34 as well)
    issue 34: Fixed bug in ScanContext causing minimum timestamp to be 1970-01-01
    issue 422: Fixed bad memory reference after copying Managed objects
    Fixed minor (innocuous) problems in Comm layer
    issue 411: fixed priority_queue less comparator
    issue 410: fixed reverse proxy map invalidation
    Fixed double file handle close in HQL interpreter
    issue 406: Check iterator against appropriate map structure
    issue 404: close file handle in FileUtils::file_to_buffer
    Fixed FindThrift.cmake to look in /usr/lib64
    Added libstacktrace to package
    Fixed Capfile rsync_installation to work with FHSized install


Version 0.9.3.0:
(2010-03-22)

    Added Hyperspace replication
    Added MapReduce connector
    Added Query Cache
    FreeBSD port
    Solaris port
    Added DUMP TABLE
    Added LOAD DATA FORMAT input file format auto-detect
    Fixed memory leak
    Added shadow CellCache
    Added poll() support to Comm layer for Linux 2.4 kernels
    Exclude CellStores that are outside of scan spec timestamp range
    Improved efficiency of KeyWritable; added comments
    Fixed race condition with proxy map propagation
    Updated htbuild
    Added missing ssl library to CephBroker build
    Added --thrift flag to ht_load_generator tool to test loads via ThriftBroker.
    Changed PerformanceEvaluation tool to generate random buffer once and re-use it to lower CPU load
    Increased ThriftClient timeout to 10min for MR PerformanceEvaluation task
    Changed Hyperspace lock operation result log from debug to info.
    Fixed recursive includes in hypertable jar files that were bloating the file size
    Modified path for Java Client examples and build.xml paths for examples jar file
    Added Hypertable PerformanceEvaluation class.
    Fixed duplicate server location assignment problem
    Added Key class to Thrift, make Cell a composition of Key and value
    Plumbed the Client::get_table_splits API through the ThriftBroker
    Checked in OutputFormat for Hypertable MapReduce connector.
    Added 'exists_table' API to Hypertable client, Thrift interface and HQL.
    Added INSTALL_EXCLUDE_DEPENDENT_LIBS cmake variable
    More FreeBSD porting work
    Turned off ShadowCache by default
    Made poll error handling more graceful (return error instead of exit)
    Added Hypertable.RangeServer.AccessGroup.ShadowCache property to enable/disable shadow cache
    Workaround for xen timestamp problem; Fixed Master deadlocks
    Fixed memory leak in maintenance queue
    Fixed deadlock in Master
    Added VERSION_ADD_COMMIT_SUFFIX cmake variable
    Added address proxy
    Got rid of boost spirit warnings
    Fix to allow 0 column family for retured cells that are DELETE_ROW
    Auto-adjust blockcache size based on workload - Maintenance scheduler re-work
    Fixed progress meter for large load files and generated data sets
    Fixed --max-keys handling for ht_load_generator - Also respect min_pool and max_pool for Uniform random number generator
    Got bloom filter working again - Added new CellStoreV2 format with all necessary bloom filter state in trailer - Added --num-hashes and --bits-per-item bloom filter options
    Cleaned up FailureInducer interface
    Fixed METADATA split recovery race conditions
    Cleaned up regression tests; Updated documentation
    Made Master::server_left() close connection to avoid race condition
    [Issue 388] Fixed issue by checking for session existence within BDB txns.
    Setting replication site priority according to order in which replicas are listed in config file
    Fixed bug in Hyperspace logic which was causing Hyperspace to delete a handle for an expired session.
    Made changes to avoid duplicate masters among BDB replication sites.
    Modified Hyperspace replication logic to wait for permanent message acks from all replicas.
    Modified Capfiles with new hyperspace replication stuff
    [Issue 372] Minor cleanup, changed error message to info. -This is an expected case and not really an error
    Upgrading BerkeleyDB requirement to >= 4.8.x
    Replaced HT_EXPECTs in BerkeleyDbFilesystem code with HT_ASSERTs
    [Issue 372] Added scope guards to prevent BerkeleyDB cursor leaks. -Also changed a few asserts to HT_ASSERT
    Made changes to allow Hyperspace clients to connect to any Hyperspace replica and get redirected to master.
    Made changes to BerkeleyDbFilesystem so that each txn opens its own DB handle to avoid DB_REP_HANDLE_DEAD errors.
    Changes to implement basic replication
    Fixed problem preventing CellStore indexes from getting GC'd
    Leave AccessGroup in consistent state after compaction failure
    Fixed Memory Corruption in MetaLogDfsBase
    Fixed infinite loop on ROW_OVERFLOW
    Fixed deadlock
    Apply MAX_VERSIONS unconditionally
    Added RSML backups in $INSTALL/run/rsml_backup/
    Fixed problem with "LOAD DATA INFILE" from STDIN where incorrect progress bar update was the load down.
    Updated version number to 0.9.2.8
    Fix for Hyperspace race condition; Added compaction asserts
    Fixed delayed connect problem
    Updated system tests; Increased BlockCache default size to 150M
    Default dfsclient timeout to Hypertable.Request.Timeout
    Fixed memory leak; Added support for tcmalloc HEAPCHECK
    Added shadow CellCache; Re-wrote maintenance scheduler
    Allow .tsv files with empty values
    Issue 358: be a little smarter about default config file path.
    Fixed problem with soname.sh and libsigar
    Workaround for clock()/poll() incompatibility
    Added support for cmake variable HT_DEPENDENCY_DIR
    Modified BerkeleyDb search path to look for 4.8 release if available
    Changing BDB_DEADLOCK messages to info instead of warning.
    Added keys_only to Thrift ScanSpec interface
    Issue 361: Allow RangeServer to reconnect with Master after connection reset
    Upgraded to Thrift 0.2.0
    Added put_cell* API to Thrift interface to give easy access to shared periodic flushing mutators
    Removing BDB deadlock error messages. Use warnings instead.
    Fixed compile error on mac
    Updated htbuild for thrift r830673, kfs 0.4 and ceph 0.17 - Also added fix for python thrift installation on ubuntu
    Made Cells and ScanSpec fully take advantage of custom allocator - Made clear() semantics for the containers consistent as well.
    Consolidate pool allocators and their usage.
    Updated doxygen doc version
    Cleaned up some compiler warnings under gcc 4.3.
    Fixed an fmr for valgrind
    Added some test helper functions/classes/templates.
    Made property accessors const where appropriate - also tweaked the default config file to use relative path if possible.
    Temporarily added back thrift perl dependencies to the rpm package - probably better off zip the perl examples in the distribution.
    Added thrift version ht -v
    Added help/usage info for the ht wrapper
    Added basic regression test init_* function. - Caught int32_t masking issues on Solaris
    htbuild: update for fedora 11
    Fixed unknown option error from serverup for non-default options.
    Fixed hql result logging in ThriftBroker
    Upgraded thrift to r830673 to fix stack smashing in ThriftBroker - added slf4j jars for the new thrift - added java-thrift.sh for easy launching jhava thrift clients
    Added support for Hypertable.Network.Interface config property
    Added tsv-format and column-id-map options to csdump
    Added Query Cache - Added .values property to load generator spec file to indicate number of distinct values to generate
    Fixed RangeServer::load_range RSML write error handling to leave system consistent
    [Issue 355] Fixed and added regression for LDI timestamp issue.
    Fixed load_generator to support MaxKeys for load type 'update'
    Added CellCacheScanner entry cache - Also fixed some build issues on Snow Leopard
    Fixed problem where load_generator not respecting MaxBytes for query
    Fixed TableMutator::set_cells to throw BAD_KEY exception for cf/cell deletes without a column family.
    Replaced sleep with perl select() command in random-wait.sh
    Fixed bug in ConnectionManager::remove - Fixed broken regressions
    Fixed trailing '\n' problem in prune_tsv
    Fixed CLOSED_WAIT problem with serverup and HdfsBroker
    [Issue 340] Added Thrift MutatorFlag IGNORE_UNKNOWN_CFS.
    Added "--exec/-e" and "--command-file" switches to CommandShell to execute commands.
    Fixed memory corruption issue triggered when the interval mutator fails on successive writes.
    Added --newer switch to prune_tsv
    Fixed bug in Schema rename method
    Fixed SIGAR library detection on mac Snow Leopard
    Fixed connection/retry problems surfaced on Solaris
    Fixed int32_t overloading issue on Solaris i386.
    Change all tests/integration scripts to explicitly use bash
    Worked around RAND_MAX quirk on Solaris
    Worked around quirks in cmake on Solaris
    Added table name to error message and modified Table & TableIdentifier classes to expose name.
    [Issue 340] Added "ALTER TABLE RENAME COLUMN FAMILY" feature to rename column family names.
    [Issue 340] Added ignore unknown cfs feature to LDI.
    Changed Hypertable client Hyperspace connection check interval to 5s instead of 3s.
    Fixed CellStoreScanner to turn off readahead mode in case of single row scans.
    Commited changes to allow a client to automatically refresh stale schema during certain ops.
    [Issue 339] Added instrumentation to debug this issue and fixed empty bloom filter problem.
    Got rid of Hypertable.Request.Timeout from default hypertable.cfg
    Got Master::close() plumbed through properly - Got rid of some warnings in Hyperspace - Made performance improvements to prune_tsv
    Commited changes to allow a client to automatically refresh stale schema during certain ops.
    Added flag to allow Sessions to reconnect to Hyperspace instead of expiring.
    Major Hyperspace overhaul to store Session, Handle, Node and Event data mostly in BerkeleyDb.
    Added prune_tsv tool
    Fixed sequential-load test script
    htbuild: exit ASAP in case of errors
    Fixed tcmalloc version check (should run every time)
    Fixed FindCeph.cmake for the new location of libceph.h in 0.14
    Updated boost to 1.40 in package build - added ntpdate to htbuild to avoid make timestamp issues - fixed tcmalloc build problems introduced by last refactor

Version 0.9.2.7:
(2009-09-18)

    [issue 333] Fixed data loss problem after recovery
    [issue 332] Fixed problem in IntervalScanner due to delayed connection establishment
    [issue 331] Fixed post-recovery split problem
    [issue 323] Fixed problem that caused unnecessary work leading to thread exhaustion
    Upgraded to Hadoop 0.20.1
    Added support to run regressions on different DFSs
    Updated tcmalloc to 1.4 for package build
    Added CephBroker for Ceph DFS (http://ceph.newdream.net/)
    Added RS_LOG_RECOVER entry to RSML after recovery to indicate log validity
    Added htpkg utility script for building binary packages
    Modified RSML to create new file on load; keep only last 10
    Allow rpm build on Ubuntu/Debian machines
    Added bin/src-utils/htbuild for building packages
    Augmented htbuild to allow easy setup of dev environment
    [issue 333] Fixed data loss problem after recovery
    Added instrumentation to help track down bad BloomFilter creations.
    Added test for out-of-order revisions; Added rangeserver_dump to Capfiles
    Added RangeServer::dump() method to dump stats to file
    Added DUMP command to rsclient
    Modified shutdown command to first close before shutting down
    Fixed stop-servers.sh; Added close command to shell
    Fixed NPE in count_stored program
    More fix to packaging on Mac OS X.
    Issue 328: Fixed broken implementation of next_row in Thrift interface.
    Changed Hypertable.RangeServer.MemoryLimit.Percentage default to 60
    Improved SELECT documentation
    Added packaging and version info related to CephBroker.
    Fixed problem introduced in ht-env.sh due to bash discrepancies
    Cleaned up doc generating targets
    Made prerm always succeed to avoid broken package states
    Some font tweaks so that the pages look decent in alternative platforms
    Fixed memory corruption problem in ht_load_generator
    Removed obsolete demo directory and cleaned up some space errors
    Only print javac version if there is one in ht -v
    Made system libs id more portable with ldd.sh
    Worked around a compiler bug in gcc 4.2
    Made kfs version optional in ht -v
    Use i386 as 32-bit x86 suffix instead of i686 from uname
    Updated README for thrift and packaging
    Build thrift broker package first to preserve regular build tree states
    Add a build type suffix to the package if it's not a release build
    Print more component version info in ht -v
    Added quick version info in bin/ht
    Added option for kfs broker to print kfs version
    Install scripting language bindings for thrift even if thrift is not installed
    Added libthrift.jar to lib (in the source tree)
    Added a few convenient commands for ht for shared lib diagnosis
    Added script to figure out soname on supported platforms
    Made cmake generate binary package index html
    Moved libthrift.jar from lib to lib/java for consistency
    Renamed LICENSE to LICENSE.txt to appease the PackageMaker
    Added convenient method to check ldd under ht
    Added some missing components for thrift broker package
    Made starting server with logging options more robust
    Avoid globbing hidden files (.svn etc.) in conf directory.
    Made the FHSize script idempotent
    Warn about prelinked shared libraries
    Fixed conf packaging for thrift broker only build
    Added HypertThriftConfig back into list of targets for ThriftBroker install.


Version 0.9.2.6:
(2009-08-15)

    [issue 319] Fixed problem that prevented cell stores from getting written to METADATA Files column
    [issue 315] Fixed scanner creation problem on restricted range CellStores
    Fixed bug introduced by recent CellStoreScanner changes
    Refactored startup scripts for robustness
    Added support to create binary packages with minimal dependencies
    Added markdown HQL documentation
    Update HQL help text
    Changed stop-servers.sh to invoke 'shutdown' via rsclient
    Also added --no-hyperspace option to rsclient
    Re-named rsclient to ht_rsclient
    Changed Hypertable.Request.Timeout from 5 to 10 minutes
    Output row and column instead of rowkey and columnkey for LDI header
    Translate IP address to 127.0.0.1 when host resolves to 0.0.0.0
    Made sequential-load/run.sh easier to run from command line.
    Check returns of some system() calls to silence some compiler warnings.
    Use objdump to get the correct SONAME for packaging
    Included Capfile.* and removed 3+MB obsolete demo files from packaging
    Added post install scripts to FHSize the directory layout
    Fixed Schema::render_hql_create_table() to not included deleted columns and empty AGs
    Cleaned up some noop code recently introduced in CellStoreScanner
    Added TTL and MAX_VERSIONS to CREATE TABLE options
    DESCRIBE TABLE no longer displays IDs by default; Added WITH IDS option
    Updated README for binary packaging
    Refactored init* functions from Config.h into Init.h
    FindSIGAR: search for x86_64 as well as amd64
    Prefer tcmalloc_minimal over tcmalloc
    Added IN_MEMORY and BLOCKSIZE=<n> to CREATE TABLE options
    Fixed bug in HT_DECODE_BYTES32


Version 0.9.2.5:
(2009-07-29)

    Fixed memory leak in query path
    Implemented purgeable CellStore indexes and bloom filters
    Added mutator options to periodically flush buffers
    Fixed bug in CommitLog that was causing some fragments to get dropped incorrectly.
    Fixed bug in CommitLogReader caused by fragment queue iterator invalidation when log fragments are pushed to the back of the deque.
    Rewrote Cell Cache/Store Scanner
    Added MaintenancePrioritizerLowMemory used in low memory condition
    Implemented mutator no flag sync feature and added regression test.
    Fixed performance regression in IntervalScanner
    [Issue 313] Added temporary fix and instrumentation for debugging.
    Updated ruby tests for mutator API changes (The rescue block was masking exceptions)
    Fixed load-exception test
    Setting default commit log revision to TIMESTAMP_MIN instead of 0.
    Fixed commit-log-gc test
    Renamed ClientException::what to message for compatibility with most languages
    Added hql_*2 APIs for returning cells as arrays in HQL queries (To support find_by_sql in HyperRecord)
    Allow 'row' and 'column' for LDI hyperformat header
    Regenerated files with updated thrift
    Added --query-delay=<millis> option to load_generator
    Got rid of some java warnings
    Fixed KosmosBroker::pread to not modify current offset
    Thrift related changes for periodic mutator flush
    Rename a test label to follow the convention of the rest of the tests
    Restart test servers automatically every time when make *tests
    Added script to dump backtraces of running/hanging servers.
    Allow VALGRIND to be defined as environment variable in start scripts.
    Added missing php files for the no_log_sync flag.
    Fixing occasional segfaults upon exit in some tests
    Fixed occasional garbled version string.
    Added system integration test which loads 5G of data, restarts the cluster and does a scan to verify the load.
    Fixed infinite in-memory AccessGroup compaction loop
    Lazy load bloom filters
    Added rsclient 10x split/merge loop test
    Applied changes to build with GCC 4.4.0
    Fixed mutator log sync regression test and cleaning up dumplog.
    Added Hypertable.HqlInterpreter.Mutator.NoLogSync property
    Added command line switch --no-log-sync to hypertable cli for setting the aforementioned property
    Fixed a couple of rare NullPointerExceptions in HdfsBroker
    Added flags argument to ThriftClient open_mutator
    Modified load generator tool to support no log sync and flush interval flags.
    Fixed bug in commit log garbage collection that was caused some cells to be dropped.
    Print out bad line number on LOAD DATA INFILE exception
    Fixed ThriftClient-perl regression test
    Send KEYS_ONLY clause over to RangeServer for processing server-side
    Fixed test for Python Thrift module
    Changed RangeServer.MemoryLimit.Percentage default from 80 to 70
    Added size of block cache to memory tracker
    Got rid of hardcoded 60 second DfsBroker.Timeout


Version 0.9.2.4:
(2009-05-25)

  * Upgraded to Hadoop 0.20
  * Added metadata-split test; Found and fixed deadlock
  * Added --no-thriftbroker to start-all-servers.sh and include this option in integration tests
  * Added property Range.MaximumSize (default is 3G)
  * Renamed Range.MaxBytes to Range.SplitSize
  * Updated to version 0.9.2.4; fixed some warnings
  * Fixed performance regression in select command.
  * Added CellStoreV1 with 64-bit support
  * Fix for race condition in range size throttling
  * Throttling is done by forcing the RangeServer::update call to wait for maintenance
    completion on ranges which indicate that they are too big.
  * Added API for getting hyperspace session from client object
  * Checked in changes to Thriftbroker so that is works with recent Thrift version.
  * Updated README to include location of new working thrift snapshot.
  * Added support for selecting data into a compressed (gzip) file.
  * Added regression test for select into gzipd file
  * Added exit scope guard to cmd_select and cmd_load in HqlInterpreter so that the open output file is always closed.
  * Refactored LoadDataSource class to make it an interface for different sources.
  * Added derived classes LoadDataSourceFileLocal and LoadDataSourceStdin
  * Added LoadDataSourceFactory to create LoadDataSource objects
  * Added regression test for LoadDataSourceStdin
  * Modified ServerLauncher to open output files in append mode.
  * Added CellStoreFactory
  * Added instrumentation to TableInfo
  * Added CellStoreBlockIndex abstraction; Parameterized CellStoreScanner
  * Fixed overflow problem with METADATA table
  * Also fixed code to respect Hypertable.RangeServer.Range.MetadataMaxBytes
  * Fixed serialization bug in Hyperspace client Protocol.
  * Added support for attr_exists in the Hyperspace master for improved efficiency.
  * Added regression test for attr_exists in BerkeleyDb test.
  * Added Hyperspace attr_list API
  * Added support for "attrlist" and "attrexists" in Hyperspace shell.
  * Added Hyperspace shell regression tests for "attrlist" and "attrexists".
  * Made LocalBroker::rmdir a little more robust
  * Fixed problem that caused spurious "Hyperspace session expiration" errors
  * Fixed memory corruption in CommitLogReder error handling logic
  * [issue 246] Commit log not getting garbage collected
  * Set URGENT bit on Hyperspace keepalive packets
  * Set URGENT bit on some other RangeServer requests such as status and shutdown
  * Fixed rowkey access group imbalance problem (causing ROW OVERFLOW errors)
  * Added regression test RangeServer-rowkey-ag-imbalanc
  * Got KosmosBroker compiling with latest KFS code
  * Modified load_generator to make DataGenerator specification opitonal with --spec-file
  * Fixed "this should never happen" problem in Maintenance scheduler
  * Fixed split log garbage collection
  * Makes hypertable build with gcc 4.3.3 on Ubuntu
  * Fixed bug in scan limit feature and added regression test.
  * Created load generator tool to test performance for synthetic update/query loads.
  * Created DiscreteRandomGenerator to generate integer distributions.
  * Created ZipfRandomGenerator to generate random integers from a Zipf distribution
  * Modified existing Random class to add method to generate samples from uniform[0,1]
  * Fixed excessive split problem that caused ROW OVERFLOW errors
  * Fixed trailing comma problem in SHOW CREATE TABLE
  * Removed redundant error message in scanner creation.
  * Added Request throttling
  * Made interval scanner initial creation asynchronous.
  * Maintenance scheduler overhaul
  * [issue 268] RangeServer methods now verify table name
  * Added DataGenerator class for generating simulated data
  * Added ht_generate_data program with example configs in examples/generate_data
  * Added support for gcc 4.[345] in FindBoost for user compiled boost libraries.
  * CellCache.PageSize default back to 512K; Fixed CellCachePool::memory_used()
  * CellCachePool::memory_used() now returns total allocated from OS minus
  * Free space remaining on current page
  * Instrumenting CellStore and CellCache to track down suspected memory leak.
  * Changed dump_stats method to dump out commit log and per access group memory usage stats.
  * Hooked up dump_stats command to rsclient program.


Version 0.9.2.3:
(2009-03-26)

  * Fixed problem of range getting loaded multiple times
  * Fixed deadlock in AccessGroup::create_scanner (can't hold AG lock while accessing LiveFileTracker)
  * [issue 240] Fixed CellCacheScanner logic to apply deletes correctly.
  * Issue 255: Removed asserts for last errors to avoid ThriftBroker crashing due to bad user input.
  * Upgraded to recent version of Thrift
  * Improving scanner creation error reporting.
  * Fixed intermittent HyperComm-Timeout test issue
  * [issue 262] Fixed race condition between DROP TABLE and range recovery
  * Fixed problem with split-recovery 3 & 7
  * Eliminated circular reference to Range that was preventing Range destruction
  * Issue 225: Fixed/improved table identifier and schema caching mechanism.
  * Also fixed an issue in IntervalScanner that was silently ignoring errors.
  * Switch to openssl for md5 in tests for better portability.
  * Updated thrift documentation on Cell as array interface.
  * Upgraded FindBoost to support 1.38
  * Changed random_read_test to use new config/property system
  * Added --flush option to random_write_test to flush after every write
  * Changed default # of maintenance threads in RangeServer to min(2, number-of-cores)
  * Changed seek+read to pread in HdfsBroker::PositionRead
  * Fixed RangeServer to return TABLE_NOT_FOUND errors when table not found
  * Issue 253: Alternative thrift interface for cells as arrays.
  * Got rid of hardcoded 30000 ms timeouts in Master
  * Added CommitLog.PruneThreshold.Max.MemoryPercentage (default 75)
  * Changed AccessGroup.MaxMemory to 1GB by default
  * Got rid of various Timeout properties in favor of just Hypertable.Request.Timeout
  * Set most timeouts to 180ms
  * [issue 258] Minor issue with incorrect time units in Thriftbroker timeout.
  * Explicitly flush output streams at a few places until we don't have to _exit.
  * Modified CellCache::memory_used() to return accurate info from underlying pool
  * Fixed AccessGroup recovery problems for IN_MEMORY access groups
  * Made CellCache memory pool page size configurable
  * Introduced Hypertable.RangeServer.AccessGroup.CellCache.PageSize, default is 100KB


Version 0.9.2.2:
(2009-03-04)

  * Added support for ALTER TABLE
  * Addded Bloom Filter to CellStore
  * Added calls to _exit in random_read/write benchmark programs to avoid static destruction
  * [issue 251] Eliminated race condition between load_range and drop_table
  * Upgraded to Hadoop 0.19.1
  * [issue 245] Fixed segfault problem with splits and multiple AGs
  * Updated thrift support for new namespace changes in the upstream library
  * Added missing columns in the thrift scan spec
  * Added more scanner/mutator examples for various languages
  * Updated README link to the new recommended thrift snapshot
  * Made CellStore::create API more generic
  * Added row_len and column_qualifier_len in Key to save repeated strlens
  * Enabled Bloom filter by default
  * Fixed crash in TableMutator if global config properties are not initialized
  * Added floating point support for properties
  * Fixed broken each_cell and with_mutator methods in ruby thrift client
  * Wrapped with_* methods in ensure block
  * Added tests for scanner and mutator usage
  * Issue 229: fixed some warnings with gcc 4.3+
  * [issue 239] Made serverup respect --wait value in all places
  * [issue 246] Fixed commit log GC problem
  * Upgraded to Quicklz 1.4 and made quicklz the default compressor for CommitLog
  * [issue 245] Use broker-assigned strictly increasing fds in KosmosBroker
  * [issue 234] Made wait for Hyperspace respect supplied timeout
  * [issue 127] Made Hyperspace server detect suspension and extend leases
  * [issue 231] Fixed problem where CellStoreV0::add return value was getting ignored
  * [issue 238] Fixed crash problem during RangeServer::replay_update
  * [issue 235] Eliminated abort after split attempts fail
  * [issue 236] Fixed hang problem on CentOS 5
  * Fixed a range server restart issue by overwriting tmp explicitly
  * Added wait logic in Master when root METADATA range server is down
  * Fixed problem where drop_table was executed during a range split causing bad RSML sequence
  * Got rid of an assert in the Comm layer on bad header
  * Fixed problem where 'Files' column not updated properly after split
  * Fixed problem where Gc.Interval was being treated as seconds
  * Changed a number of programs to exit using _exit to avoid static destruction problems
  * Fixed problem caused by invalid initializations of rssstat (Hiroyuki)
  * Made stopping servers faster by waiting in parallel
  * Leave RSML alone in case of errors
  * Refactored bash specific commands in Capfile into a separate script
  * Disable thrift broker API logging by default
  * Issue 190: Reverted to the METADATA sanity check since RangeLocator is fixed


Version 0.9.2.1:
(2009-01-22)

  * Added ulimit -c unlimited to the top of start-thriftbroker.sh
  * Fixed NULL pointer dereference in LoadDataSource on bad input
  * Fixing another Hyperspace deadlock (tied up reactor thread)
  * Added logic to retry open of Hyperspace file /hypertable/tables/METADATA
  * Make sure RangeServer gets killed in between runs of range split recovery test.
  * Fixing deadlock in Hyperspace session lease renewal logic.
  * Bumped up data size for split recovery tests to ensure crashes
  * Remove local fs in clean-database.sh even if dfsbroker is not running
  * Fixed initialization race condition in Master
  * Commented out MetaLog-Master test
  * Fixed version generation for testing with unsuccessful merges
  * Fixed reactor thread deadlock in Hyperspace
  * Fixing race condition in RangeServer recovery that was causing Hypertable master to crash.
  * Eliminated DfsBroker test dependency on /usr/share/dict/words
  * Eliminated reference to deprecated class TException in ruby client test
  * Changed MasterClient to throw exceptions
  * Fixed deadlock in Hyperspace
  * Updated thrift API documentation
  * make doc (and thriftdoc) now generate thrift api doc as well
  * Fixed problem with LocalBroker where it was closing the wrong descriptor because of reuse
  * Fixed a CommitLog serialization problem introduced with commit a58dce91b4059b022921287a43d7afb669380d0b
  * Augmented multiple-maintenance-threads test to run a "SELECT *" in the background once per second
  * Cleaned up logic that manages 'Files' column contents in AccessGroup
  * Cleaned up error handling logic in many places
  * Fixed split retry logic after exception
  * Renamed CrashTest class to FailureInducer and added support for throwing exceptions
  * Added 'RangeServer-load-exception' test to validate proper retry when load_range, invoked after split, throws an exception
  * Added MicrosecondLayout class in Logger.cc for adding microseconds to timestamps in log messages
  * Augmented the multiple-maintenance-threads test with a second dump to see if it's a transient error if the first run comes up short
  * Also added a note in README about force restart test servers
  * Fixed random segfaults upon exit in random_*_test and serverup
  * Coding convention cleanups
  * [issue 222] Fixed race condition in RangeServer::update introduced with SplitOff=high
  * Cleaned up start up scripts
  * Renamed top-level 'test' directory to 'tests' for some platforms
  * CMake file changes to restart test servers automatically
  * Cleaned up header files to reduce dependency on Config.h hence Version.h
  * Fixed a few issues with FindBoost.cmake
  * Added .gitignore for *.pyc
  * Made some integration tests runnable via make test
  * [issue 188] Added support for URGENT CommHeader flag
  * Did some work on server-side request timeout

Version 0.9.2.0:
(2009-01-05)

  * Fixed initialization problem that caused ConnectionManager thread to exit immediately
  * Fixed build for boost 1.35+
  * Issue 209: Fixed build with gcc 4.3+
  * [issue 216] Fixed problem where clock skew was causing updates to be dropped
  * [issue 201] Fixed deadlock recently introduced with support for SplitOff=high
  * Made commit log more robust
  * Added calls to FSDataOutputStream.sync() for FLUSH for HdfsBroker
  * Fixed range server metalog reader
  * Made RangeServer::load_range() call in Master::report_split() synchronous
  * Fix for ReactorRunner to not use handle if de-registering its fd failed
  * Fixed and expanded split-recovery integration test
  * Worked around compiler (gcc 4.1 vs 4.0) quirks in overloading
  * Fixed a bug in converting hypertable cell to thrift cell that was setting the
    wrong column qualifiers in subsequent cells that don't have column qualifiers.
  * [issue 193] Added table generation to CellStoreTrailer
  * [issue 206] Fixed problem where CommitLog fd gets into bad state
  * Fixed race condition in RangeServer::load_range (reported by Phoenix)
  * Wrapped compaction logic in try/catch block to ensure maintenance bit gets cleared on exception (reported by Phoenix)
  * Added support for Hypertable.CommitLog.SkipErrors (default is now ASSERT)
  * Got rid of shutdown segfault in ReactorRunner by only printing LOG message if !shutdown
  * Added support for Hypertable.RangeServer.CommitLog.Flush
  * Got rid of Kfs.Broker.Flush property (in favor of Hypertable.RangeServer.CommitLog.Flush)
  * Expanded split-recovery integration test
  * Updated README to include a link to a working snapshot of thrift
  * Fixed timeout usage in various language bindings
  * Also added destructors (or similar mechanism) to close transport
  * Fixed some javac dependency issues caused by package/path mismatch
  * Added a boolean flag to allow Client::open_table to bypass cache
  * Made spirit parsers thread safe
  * Allow hypertable clients to take different config files
  * Fixed custom validate issues with properties
  * Added regression tests for Properties
  * Fixed Hyperspace callback signature for 'master' file
  * Added options to skip errors in metalogs (default throws)
  * Updated regression tests for range server metalog
  * FindBoost.cmake fix for Boost 1.37
  * Changed type of Kfs.Broker.Flush from i32 to bool

Version 0.9.1.1:
(2008-12-23)

  * Changed default value for Hypertable.RangeServer.CommitLog.RollLimit back to 100MB
  * [issue196] Added escape/unescape logic to select and LDI
  * Eliminated race condition that caused ASSERT with multiple maintenance threads
  * Got rid of alignment logic in CellCachePool
  * Changed 'range not found' error to info message in RangeServer::create_scanner
  * Fixed seg fault during construction of 2nd Client object
  * Fixed bug in MetadataRoot::get_next_files
  * Added commit log gc integration test
  * Fixed bug in commit log gc logic
  * [issue162] Fixed pread bug in HdfsBroker
  * Upgraded to Hadoop 0.19.0
  * Fixed seg fault in Comm destruction sequence
  * Fixed shutdown logic in ConnectionManager
  * Changed default value for Hypertable.RangeServer.Range.SplitOff property to "high"
  * Fixed problem with System::locate_install_dir for binaries running outside a normal installation
  * Fixed some Timer problems introduced with millisecond change
  * Plumbed debug() method through Filesystem class down into brokers
  * Fixed seg fault in serverup on shutdown
  * Fixed cmake FindKfs logic
  * More build dependency cleanups (now truely independent of thrift)
  * Finished support for Hypertable.RangeServer.Range.SplitOff=(high|low)
  * Added aol-time-order integration test to validate proper functioning of 'high' mode
  * Wait for all DFSBroker files to close before removing directories
  * Made thrift support really (it was intend to be but not) optional
  * Made version number more accurate as well.
  * Fixed cyclic dependency between Common and AsyncComm libraries
  * Fixed some Capfile issues; added test/integration
  * Reorganized the toplevel test directory a bit
  * Added a doc/README that points people to hypertable.org
  * Removed ThriftBroker startup dependency on /hypertable/tables/METADATA hyperspace file
  * Also fixed hang/crash problem in Comm::~Comm

Version 0.9.1.0:
(2008-12-08)

  * Added a simple thrift broker for hypertable services
  * Fixed build issues and warnings on 64-bit CentOS
  * Use CMAKE_DL_LIBS instead of -ldl for portability
  * Coding convention cleanups
  * Fixed a race condition in Master::report_split
  * Added CellCache memory pool + fixed memory accounting
  * Made Hyperspace command shell utility reuse Hypertable command shell code.
  * Fixed crash with > 1 maintenance threads
  * Fixed ROW_OVERFLOW regression
  * [issue 177] Changed all integers written into Hyperspace into ASCII strings
  * Added better diagnostic output for checksum mismatch errors
  * Changed all timeouts from seconds to milliseconds
  * Upgraded Comm header
  * Fixed crash in INSERT command with columns with no qualifiers
  * Added (optional) timer to Hyperspace and Master clients
  * Fix for issue#170.
  * Hypertable Client now contains a RangeLocator
  * Refactored Config to allow easy composition of component policies
  * Adopted SIGAR for cross-platform system info/stat
  * Added MT-safe/faster code to parse ip address
  * Issue 156: simple row/range level transaction support
  * Removed extra connection manager for METADATA table used by Master
  * Preserve column family order in HQL schema
  * Refactored out HqlInterpreter from HqlCommandInterpreter
  * Added support for RAII idiom with ScopeGuard and friends
  * Added a generic Locker for any object with lock/unlock methods
  * Added HT_ASSERT as a short cut of HT_EXPECT(expr, Error::FAILED_EXPECTATION)
  * Worked around StringUtil::vform problem in log4cpp 1.0 for certain platforms.
  * Refactored handle_event a bit to reduce code duplications
  * Fixed a few (nread < 0) cases, where nread is size_t.
  * Added System::rand64()
  * Updated installation instructions based on feedbacks
  * Cleanups for gcc 4.3+
  * Made HypertableJavaComponents a cmake target
  * Refactored FindKfs.cmake
  * Added a few missing ", or any later version." to GPL license blurbs
  * Fixed a situation where some cellstores are not GC'ed
  * Made some metalog entry errors non-fatal
  * Fixed column family TTL feature and added regression test for it. (Issue #160)


Version 0.9.0.12:
(2008-11-08)

  * Fixed TableMutatorScatterBuffer hang problem
  * Fixed bug in MergeScanner and added optimized MergeScanner for scans with m_return_deletes
  * Upgraded to Hadoop 0.18.2
  * Fixed random read performance regression
  * Fixed descriptor leak in HdfsBroker
  * [issue 166] Fixed problem of bad disk usage accounting which caused SEGFAULT
  * Added log rotation via cronolog
  * Added option for dump_metalog to copy a metalog
  * Bump the stream log buffer size to 4KB for longer backtrace
  * Added --wait option for serverup serverup dfsbroker had been timing out too soon
  * Fixed default timestamp value on the KeySpec contructor args
  * Added more detailed error info for unexpected metalog entries
  * Fixed a race condition in update while local recovery is in progress
  * Removed old code that was causing last_table_id resetting to 0 upon Master restart.
  * Use thread-safe gethostbyname_r on linux (was causing SEGFAULT)

Version 0.9.0.11:
(2008-09-30)

  * Fixed problem with commit log garbage collection
  * Overhaul: cleaned up AccessGroup compaction logic
  * Overhaul: separated timestamp from revision number
  * Overhaul: eliminated timestamp order restriction
  * Overhaul: cleaned up RangeServer::update()
  * Check for bad column name in ScanSpec and throw exception
  * Upgraded to Hadoop 0.18.1
  * Add support for qualified columns in LOAD DATA INFILE
  * Got SELECT ... INTO FILE working again
  * Updated README to include log4cpp patch instructions
  * Fixed NULL pointer deref in BMZ on uncompressible data
  * [issue154] Fixed problem in MergeScanner causing max_versions probs
  * Fixed retry logic inside IntervalScanner
  * Added a RangeServer::get_statistics() method and rsstat tool (Donald)
  * Fixed a number of issues getting KFS broker up and running
  * Modified Capfile to allow a dfs= variable override to specify which dfs.
  * Modified scripts to only test for servers on localhost

Version 0.9.0.10:
(2008-08-14)

  * Fixed range loss problem when can't write RSML during split
  * Fixed Hyperspace to retry txn upon BDB deadlock exception
  * Fixed a bug in RangeServer::schedule_log_cleanup_compactions that prevents log cleanup compactions from happening. (thanks Donald)
  * Made Hyperspace client throw exceptions
  * Changed epoll to level triggered for < 2.6.17, edge triggered for newer
  * Fixed problem in HdfsBroker which caused it to close all handles
  * Fixed problem with accept() logic in edge-triggered mode
  * Fixed problem in FindBerkeleyDB.cmake also fixed link problem in dfsclient
  * Got rid of all calls to rand(), etc.  More work on random benchmark tools
  * Moved rand startup wait out of RangeServer and into Capistrano
  * Added full deprecation warnings to build
  * Eliminated infinite loop in AsyncComm; Fixed HdfsBroker shutdown
  * Upgraded TableReader::next(...) output values so that not only key but also column family and qualifiers are known to the reducer
  * Initial checkin of freebase example

Version 0.9.0.9:
(2008-08-03)

  * Fixed Linux epoll problems
  * Removed deadlock in Master::drop_table()
  * Modified shutdown scripts to wait for service shutdown before returning
  * Changed default listen() pending connection backlock from 64 to 1000
  * Modified RangeServers to wait random interval [0..2] secs before starting

Version 0.9.0.8:
(2008-08-01)

  * Added schema cloning (CREATE TABLE x LIKE y) (thanks to bithckr)
  * Fixed a potential macro redefinition in compat-c.h (thanks to Leon Mergen)
  * Clarified some documentation based on user feedback
  * Added fix for ignored 'try' in Hyperspace try_lock (thanks to liaoguangxian)
  * Added CELL expressions
  * Fixed bad reference to freed Hyperspace Session object
  * ported mapreduce connector to the newer API
  * Changed Hypertable::Client constructor to accept install dir
  * Got TableScanner working with multiple row intervals
  * Overhauled HQL WHERE clause (scan predicate)
  * Modified ScanSpec to include vector of row ranges; Added ScanSpecBuilder
  * Set TOS field on Hyperspace UDP packets to Minimize delay
  * Fixed deadlock issues in RangeServer during replay
  * Added drop_table RangeMetaLog entry
  * Overhauled launch scripts; Upgraded to Hadoop 0.17.1
  * Avoid using fs->length(path) to judge whether a RangeServerMetaLog file is empty, which doesn't work well in Hadoop DFS.
  * Fixed a bug in Read/PositionRead due to misuse of readFully().

Version 0.9.0.7:
(2008-07-18)

  * Got RangeServer recovery working
  * Added shutdown command to hypertable command interpreter
  * Fixed ApplicationQueue spin problem (c++ & java) plus other bugs
  * Merged in Mateusz Berezecki's Hadoop MapReduce contribution
  * Added random_write_test
  * Made Comm a singleton as intended
  * Added explicit Hyperspace session destroy mechanism
  * Changed epoll usage from level to edge triggered
  * Added option to preserve key columns as regular columns
  * Upgraded to latest KFS code
  * Check for and throw exception on bad scan spec (start > end)
  * Added ROW_UNIQUIFY_CHARS option to LOAD DATA INFILE
  * Added utility to dump metalog
  * Added convenient constructor (host, port) for DfsBroker client.
  * Added version check in case of shared libraries
  * Added Hypertable::Config to make init easier
  * Added a regression test to ensure that deletes are retroactively applied
  * [issue 120] Fixed problem with MergeScanner not properly handling deletes
  * [issue 118] Fixed segfault on empty .tsv line; Fixed output supress flags
  * [issue 119] Fixed problem where end timestamp was getting ignored
  * Doc: added notes on shared library install usage.
  * Cleanup build documentation
  * Avoid hash_value redefintion with boost 1.35+
  * Build: link libraries cleanup
  * [issue 115] Fixed Hyperspace Berkeley DB deadlock problem
  * Fixed Master error handling logic in create_table
  * Fixed link problem on XCode 2.4
  * Added RangeServer metalog classes and tests
  * Use native 'exists' instead of 'get' for BDB FS 'exists' calls.
  * Made BDB FS do basic recovery on init
  * Added support to print "pretty functions" in exception trace
  * Changed TableIdentifierCopy etc. to *Managed for what they really are
  * Added some documentation for tricky part of DynamicBuffer
  * Updated serialization test for str16 and bytes32
  * remove HT_TRY_DECODE in favor of HT_TRY
  * Added script to find & replace with perl regex
  * Coding convention/guideline sweep

Version 0.9.0.6:
(2008-06-14)

  * Ported Hyperspace to Berkeley DB
  * Fixed core dump in HdfsBroker when --verbose is not set
  * [issue 110] Fixed scanner infinite looping on large objects
  * Fixed buffer overrun problem in Hyperspace keepalive message
  * Cleaned up TableMutator retry logic
  * Made cmake 2.6 compatible.

Version 0.9.0.5:
(2008-06-03)

  * Made size of location cache configurable; set default to 1M
  * [issue 67] fixed bad free in comm layer
  * Fixed log fragment GC problem
  * Fixed race condition in LocalBroker::close()
  * Fixed doxygen comments; Updated Doxyfile to exclude boost fix dir
  * [issue 99] Added TableMutator::retry()
  * [issue 18] Added support for '~' expansion in hypertable
  * [issue 10] Implemented proper serialization for Serialization.h functions
  * [Issue 104] Fixed hang problem in HdfsBroker
  * Changed serialization byte ordering to little endian
  * Purge old cells to avoid repeated deletion of old files
  * Various portability fixes
  * [Issue 71] Fixed lagging scanners referencing GC'd CellStore problem
  * Added release callback to MergeScanner
  * Added GC support for issue 71 (race condition while compaction/scanning)
  * Added Filesystem::rename and friends
  * Added flush option to Filesystem::append and friends
  * [issue 41] Fixed CellCache::purge_deletes problem
  * Got RANGESERVER_ROW_OVERFLOW error propagating back to client
  * Upgraged to Hadoop 0.16.4
  * Overhauled Client library to send errors back as deltas
  * Added mutex class to accomodate changes in boost 1.35+
  * Fixed ambiguous operator+ overload problem
  * Created new StaticBuffer class which is now used in all internal APIs
  * Added destructor to Buffer class
  * Cleaned up DynamicBuffer and Buffer
  * Rearranged for better branch prediction in encoded_length_vi*
  * Switched to a more reliable signal facility (sigaction)
  * Got rid of some warnings on release build
  * Fixed compile problem on Ubuntu
  * Got rid of ByteString32 in favor of vint ByteString
  * Moved Serialization.h and its tests to Common
  * Added decode_i8 and regression tests.
  * Refactored BufferT and ExtBufferT usages to use Common/Buffer
  * Changed format of buffer passed to replay_update();
  * Added portable serialization code:
  * Added support for exception chaining.
  * Changed append API to reflect the ownership change of write buffer
  * Added include for stricter compilers (e.g. gcc 4.1.2)
  * Changed TableIdentifierWrapper to TableIdentifierCopy
  * Got rid of the EncodedLength/Encode/Decode functions from Types.h
  * Implemented RangeServer::replay_update
  * Modified RangeServer::load_range to include RangeState object
  * Fixed some build problems on mac (because of newly added dependencies)
  * Enhanced LOAD DATA INFILE to accept alt. header file and zipped files
  * Fixed free memory used problem and got rid of warnings
  * Added REQUEST_TIMEOUT exception to client; upgraded to Hadoop 0.16.3
  * Added wrapper for high res time
  * Added timeouts to TableMutator and TableScanner
  * Changed RangeServerClient to throw exceptions
  * Made scan spec public fields naming consistent with the rest of the API
  * Logging cleanup; now redirectable; flushable; added stream macros
  * Made ReferenceCount noncopyable
  * Fixed a leaking corner case in Hypertable::format
  * Added RangeState and re-organized Range split logic
  * Added TableIdentifierWrapper and RangeState
  * Allow keys to be built from multiple columns in LOAD DATA INFILE
  * Fixed segfault caused by race condition in sampleClient
  * Commit log re-write
  * Fixed HdfsBroker::rmdir to return FileNotFound
  * Moved header checksum to end of header; Improved split row selection
  * FS interface cleanup. Use exception where appropriate.
  * Cleaned up BlockCompressionHeader code
  * Fixed bug in startup scripts related to hadoop upgrade
  * Fixed initialization order problem in RangeServer
  * Cleaned up CommitLog types and added doxygen comments
  * Added smart pointers to MetaLog readers
  * Finished adding exists method to DfsBroker client
  * Added exists() method to Filesystem interface; Upgraded to Hadoop 0.16.2
  * Fixed regressions due to the license preamble change
  * Wrap long lines in license preambles.
  * Delete cruft in attic along with the attic
  * Modified ApacheLogParser to handle .gz files
  * Put time formatting in a function for apache_log example
  * Changed ApacheLogEntryT to ApacheLogEntry
  * Cleaned up and improved apache_log example
  * Got rid of error codes in Client API in favor of exceptions
  * Types name change; Comment header update
  * First cut of meta log API
  * More build cleanups: move generic definitions outside gcc macros; support gcc 3.4.x
  * Use our faster implementations by default and rename wikipedia based impls to *_wp
  * Reorganized Range split logic for new MetaLog implementation
  * Fixed bug that was causing default CellStore compressor to be "none"
  * Changed so SplitPoint and SplitDir are passed through Master
  * Got rid of split_timestamp
  * Dropped timestamp from location string
  * Handle large files on 32-bit systems.
  * Fixed problem loading .tsv files > 2GB on Linux
  * Changed argument of RangeServer::drop_table to TableIdentifierT
  * Fixed IN_MEMORY loading problems (issue #66)
  * Fixed initialization problem in hypertable command interperter
  * Added replay commands to rsclient; Added RangeServer::drop_range()
  * Implemented RangeServer::replay_start and replay_commit
  * Got rid of boost program_options hack
  * Build and install cleanups.
  * Ported rsclient to new command line shell framework
  * Abstracted command line shell into class that can be shared
  * Fixed a few small (seemingly innocuous) issues in AsyncComm
  * Fixed memory tracking
  * Added complete TableIdentifier into CommitLog entry headers
  * Created TableInfoMap class to prepare for "replay" map
  * Added plumbing for RangeServer replay methods
  * Modified ScannerTimestampController to store Timestamp objects
  * Fixed FindBoost.cmake on Redhat 4u3
  * Changed CMakeLists.txt files to facilitate use of other malloc packages

Version 0.9.0.4:
(2008-02-27)

  * Added code to check boost and apply fixes if necessary
  * Fixed issue #47 Cleaned up DROP_TABLE handling in RangeServer and Client
  * Fixed issue #63 Dropped updates under concurrent loading
  * Fixed race condition in Master between server join & register
  * Fixed RangeServer hang after TIMESTAMP_ORDER_ERROR error
  * Fixed performance bug that was hurting random reads

Version 0.9.0.3:
(2008-02-19)

  * Fixed bug in MergeScanner where deletes were being wrongly applied
  * Detect and report "supplied timestamps not strictly increasing" error
  * Added testing options KEYS_ONLY and RETURN_DELETES to SELECT statement
  * Removed unused tests and associated data to bring source tarball below 20MB
  * Modified ApacheLogParser to return non-coliding timestamps for requests that happened in the same second

Version 0.9.0.2:
(2008-02-12)

  * Made all timestamps interpreted as GMT (issue #56)
  * Catch table scanner / mutator exceptions in Master GC logic (issue #55)
  * Fixed Master abort when last_table_id attribute of /hypertable/master not found
  * Modified kosmosBroker properties to be capitalized camel case

Version 0.9.0.1:
(2008-02-07)

  * Fixed compile errors on Ubuntu, FC5 and FC6
  * Got rid of AsyncComm regression dependency on /usr/share/dict/words
  * Fixed critical GC bu that deleting good MEATADATA rows
  * Fixed FindBoost.cmake to work if only .so files are installed