B-tree merge: correctness first
Test Salma El-Sayed’s B-tree leaf-page merge prototype: snapshots, parallel scans, VACUUM, and standby safety.
Nik Samokhvalov, Kirk Wolak, and Salma El-Sayed tested the B-tree leaf-page merge prototype and agreed to prioritize correctness before benchmarks. The discussion covered boundary pivots, merge-group metadata, concurrent readers, and deferred VACUUM cleanup. Nik reported standby and parallel-scan failures; the group examined index-only-scan snapshot safety and the lifetime of pinned pages. The next step is focused reproduction, small fixes, and retesting against exact revisions, not a claim that the prototype is ready to ship.
Summary from session notes; timecodes pending captions.
active
direct mapping