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RELEASE_NOTES.md

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Release Notes

Changes in Sawtooth 1.2.6

sawtooth-core:

  • Add context to the various EnvironmentErrors that can occur in the blockstore operations, in order to make debugging easier.
  • Reduce visibility of modules in validator library to crate-level
  • Enable IPv6 support in the validator
  • Support listening on an IPv6 address in REST API
  • Handle an error in sawtooth-cli when schema is invalid
  • Correct metric for "chain head moved"
  • Fix reading from length-delimited input in sawadm

Documentation:

  • Add missing documentation about Rust SDK
  • Clarify consensus compatibility info
  • Fix typos and broken links

Changes in Sawtooth 1.2.5

sawtooth-core:

  • Fixed issue with decoding state values which caused the validator to crash when settings with long values were used. Add DecodedMerkleStateReader for state views. This reader provides the CBOR-decoded values to the rust implementations of StateView structs via a new implementation of the StateReader.
  • Add a justfile with build, clean, docker-build-doc, docker-lint, fix, lint and test targets. This is currently Rust-centric as it's the easiest to put into the justfile in a useful manner.
  • Add stable and experimental features to all crates.

Documentation:

  • Fix capitalization of glossary and glossary references.

Changes in Sawtooth 1.2.4

sawtooth-core:

  • Enable heartbeats for all zmq connections. Before only validator to validator zmq connections had heartbeats however if a network sat idle long enough the zmq connection between components may disconnect.
  • Fix timestamp check in block_info for catch up. This was previously fixed in python but was missed in the rust version.

Changes in Sawtooth 1.2.3

sawtooth-core:

  • Support for raw transaction headers, as specified in Sawtooth RFC #23. This feature is backward compatible via the use of a protocol version indicator.
  • All core transaction families are compatible with Sawtooth Sabre release 0.4.
  • A new BlockManager has been implemented, as specified in Sawtooth RFC #5. This new feature improves block management and helps remove a known race condition that can cause network nodes to fork.
  • Several core transaction families have been rewritten in Rust: Settings, Identity, and BlockInfo.
  • All SDKs are in separate repositories for improved build time and release scheduling. The following SDKs were moved to their own repositories in this release:
  • The Devmode consensus engine has been moved to a separate repository.
  • Consensus support has been modified to improve compatibility with PBFT consensus.
  • Cache performance has been improved for settings and identity state.
  • Duplicate signature validations have been eliminated.
  • Duplicate batches are now removed from the pending queue and candidate blocks.
  • Transaction processors now receive a registration ACK before receiving transaction process requests.
  • Long-lived futures are expired when awaiting network message replies.
  • Logs now have fewer duplicate log messages.

Documentation:

  • Improved summary of the supported consensus algorithms: PBFT, PoET, Raft, and Devmode. See Introduction.
  • Complete procedures for configuring PBFT consensus on a Sawtooth node and changing network membership. For procedures to configure either PBFT or PoET consensus, see:
  • New Swift and Java tutorials, including SDK reference documentation, for writing native mobile client applications for Sawtooth. See the Java and Swift links in Using the Sawtooth SDKs
  • Technical corrections, bug fixes, and general improvements throughout the documentation.