{"id":"sstable-merge-forward-only","text":"The k-way merge in `sstable-and-compaction/sstable.py` is forward-only with no direction tracking or reverse iteration support; there is no direction enum, no `FindLargest`, and no heap rebuild on direction change.","truth_value":"IN","source":"entries/2026/05/29/topic-leveldb-merger.md","source_url":"","source_hash":"","justifications":[],"dependents":["lsm-compaction-output-is-correct"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"sstable-merge-forward-only","truth_value":"IN","reason":"premise"}]}}