Status: IN
WAL batch replay correctly identifies and rejects incomplete batches via the trailing COMMIT sentinel, providing atomic-or-nothing batch recovery semantics.
Batch atomicity holds only when incomplete batches are detectable — without BEGIN markers, replay cannot distinguish standalone writes from orphaned batch members
Depends on (SL): wal-batch-atomicity-via-commit-record, wal-batch-commit-sentinel, wal-batch-single-write
Unless: wal-no-begin-marker