Fix DiskANN LRU Set Invalid Medoid (#98)

Signed-off-by: Patrick Weizhi Xu <[email protected]> (cherry picked from commit 76723f9)
zilliztech · Sep 20, 2023 · b455816 · b455816
1 parent c02f584
commit b455816
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/thirdparty/DiskANN/src/pq_flash_index.cpp b/thirdparty/DiskANN/src/pq_flash_index.cpp
@@ -1436,7 +1436,7 @@ namespace diskann {
         }
       }
     }
-    if (k_search > 0) {
+    if (k_search > 0 && indices[0] != -1) {
       lru_cache.put(vec_hash, indices[0]);
     }