From edd49863badb750b875a73c0648f74b21ea2ac62 Mon Sep 17 00:00:00 2001
From: Andrew Kane <andrew@ankane.org>
Date: Wed, 25 Feb 2026 12:52:29 -0800
Subject: [PATCH] Improved limit for HNSW scan memory

---
 src/hnswscan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/hnswscan.c b/src/hnswscan.c
index 61a8d63..8752d62 100644
--- 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;