fix(2pc): clean up prepared transactions recorded in the WAL after a restart - #1271

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willothy wants to merge 21 commits into

pgdogdev:mainfrom

willothy:fix/2pc-wal-recovery-gid-prefix

Commits on Jul 26, 2026

fix(2pc): require GID prefix when parsing transaction IDs
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fix(2pc): clean up prepared transactions by durable ID after restart
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fix(integration): build 2pc wal_helper with pgdog default features
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Commits on Jul 27, 2026

feat: validate NODE_ID and DEPLOYMENT_ID at startup
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fix(2pc): refuse to resolve prepared transactions outside the GID alphabet
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refactor(2pc): render cleanup statements where the scanned GID is matched
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fix(2pc): leave prepared transactions the cleanup user cannot resolve to the operator
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test(2pc): use a random GID in the foreign prefix cleanup test
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feat(2pc): record the coordinator GID prefix in the WAL
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fix(2pc): resolve recovered transactions by their recorded GID
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fix(2pc): render per-shard GIDs from actual shard numbers
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docs(2pc): describe the alphabet check on recorded GIDs
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style(2pc): branch on prefix presence with if instead of match
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style(2pc): indent the prepared transactions scan chain
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style(2pc): pass the cleanup statement by reference
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docs(integration): correct wal_helper comment about the empty prefix
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docs(2pc): state prefix volatility and fallback triggers precisely
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docs(2pc): document gid as rendering the given prefix
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style(2pc): bind every checkpoint entry field during recovery
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refactor(util): rename safe_identifier to is_safe_identifier
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test(2pc): cover checkpoint entries written without a prefix
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