Improved limit for HNSW scan memory

ankane · ankane · commit edd49863badb · 2026-02-25T12:52:29.000-08:00
diff --git a/src/hnswscan.c b/src/hnswscan.c
@@ -151,7 +151,7 @@ hnswbeginscan(Relation index, int nkeys, int norderbys)
 	/* Calculate max memory */
 	/* Add 256 extra bytes to fill last block when close */
 	maxMemory = (double) work_mem * hnsw_scan_mem_multiplier * 1024.0 + 256;
-	so->maxMemory = Min(maxMemory, (double) SIZE_MAX);
+	so->maxMemory = Min(maxMemory, (double) SIZE_MAX / 2);
 
 	scan->opaque = so;
 
