{"id":"lsm-wal-has-no-fsync","text":"The WAL class in `log-structured-merge-tree/lsm.py` calls `flush()` but never `os.fsync()`, making it strictly weaker than the standalone WAL which offers configurable sync modes","truth_value":"IN","source":"entries/2026/05/28/topic-directory-fsync-semantics.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"lsm-wal-has-no-fsync","truth_value":"IN","reason":"premise"}]}}