Fixed hnsw graph not repaired error with HNSW vacuuming - fixes #993

CHANGELOG.md

@@ -1,5 +1,6 @@
 ## 0.8.4 (unreleased)
 
+- Fixed `hnsw graph not repaired` error with HNSW vacuuming
 - Fixed possible error with inserts during HNSW vacuuming
 
 ## 0.8.3 (2026-06-17)

src/hnswvacuum.c

@@ -80,6 +80,14 @@ RemoveHeapTids(HnswVacuumState * vacuumstate)
 			if (!HnswIsElementTuple(etup))
 				continue;
 
+			/*
+			 * Skip deleted tuples. It is important they are not added to the
+			 * deleted hash to avoid false positives in NeedsUpdated and
+			 * ConfirmRepaired.
+			 */
+			if (etup->deleted)
+				continue;
+
 			if (ItemPointerIsValid(&etup->heaptids[0]))
 			{
 				for (int i = 0; i < HNSW_HEAPTIDS; i++)