postgres=# select * from sessions where video_id = 'c0wKWcPZnH0';
Vibe Hacking Postgres
Prototype merging sparse B-tree leaf pages and audit its correctness failures.
session summary
The workshop focused on a prototype for reclaiming B-tree bloat by merging adjacent sparse leaf pages. Kirk proposed an incremental, access-exclusive-lock design that first merges only one pair, prioritizing correctness of forward and backward scans. The pgindex_reclaim extension identified merge candidates, but execution crashed. Inspection showed incomplete parent-page handling and incorrect WAL/critical-section logic. The group chose to stop trusting the generated merge code, add a reproducible regression test, study related upstream page-deletion work, and restart from the smallest verifiable merge.