build: 1.0.1#4
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Re-adds the volatile generation counter (and its companion retry loop in
flushPendingRows) that the cursor strip had removed. This is the
foundation the reconnect work (#20/#21) builds on — the producer needs a
way to detect that the wire-side actor has rotated state mid-encode so
it can discard now-poisoned schema-ID refs and re-encode with full
schema definitions.
What lands here:
* QwpWebSocketSender: volatile connectionGeneration + lastSeenGeneration
pair. Bumped on initial recovery from disk (the recovered FSNs were
never seen by *this* server connection, so the first batch must
re-publish full schemas). Reconnect path will bump in subsequent
work.
* flushPendingRows: encode-mid-reconnect retry loop. Sample gen before
encode + after finishMessage; if it changed, discard the encoded
bytes (table buffers haven't been reset yet — source rows are
intact) and retry with reset schema state. Bounded at
MAX_SCHEMA_RACE_RETRIES = 10 so reconnect-faster-than-encode
surfaces a hard error instead of spinning.
* CursorSendEngine.wasRecoveredFromDisk(): single-bit accessor the
sender reads during ensureConnected to decide whether to bump.
* SegmentRing.openExisting: filter out empty hot-spare leftovers
(frameCount=0) from prior sessions. Those carry the provisional
baseSeq=0 and would otherwise collide with the real baseSeq=0
segment and trip the contiguity check. Surfaced by the new
recovery test — caught a real bug in the recovery scan.
* Test hooks bumpConnectionGenerationForTest / accessors for gen and
maxSent*Id so reconnect-effect tests can run without spinning up
the (still-not-implemented) reconnect path.
Tests cover: gen=0 for fresh connect, gen=1 after disk recovery, gen
bump triggers schema-state reset on the next encode and is sticky
(further flushes without bump don't re-reset).
Spec decisions #4 and #5 land here.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
clienttoquestdb-clientfor better discoverabilityThe published artifact will now be
org.questdb:questdb-clientinstead oforg.questdb:client.Test plan
mvn clean installsucceeds🤖 Generated with Claude Code