{"id":"btree-wal-no-operation-boundaries","text":"The WAL logs individual page writes and commits by full truncation; it cannot represent a multi-step structural operation as an atomic unit","truth_value":"IN","source":"entries/2026/05/29/topic-postgres-nbtree-half-dead-state-machine.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"btree-wal-no-operation-boundaries","truth_value":"IN","reason":"premise"}]}}