diff --git a/datasources/src/main/java/org/opensearch/sql/datasources/storage/OpenSearchDataSourceMetadataStorage.java b/datasources/src/main/java/org/opensearch/sql/datasources/storage/OpenSearchDataSourceMetadataStorage.java
index 3de924dcbb..5f5e087ce0 100644
--- a/datasources/src/main/java/org/opensearch/sql/datasources/storage/OpenSearchDataSourceMetadataStorage.java
+++ b/datasources/src/main/java/org/opensearch/sql/datasources/storage/OpenSearchDataSourceMetadataStorage.java
@@ -224,6 +224,8 @@ private List<DataSourceMetadata> searchInDataSourcesIndex(QueryBuilder query) {
     searchSourceBuilder.query(query);
     searchSourceBuilder.size(DATASOURCE_QUERY_RESULT_SIZE);
     searchRequest.source(searchSourceBuilder);
+    // https://github.com/opensearch-project/sql/issues/1801.
+    searchRequest.preference("_primary_first");
     ActionFuture<SearchResponse> searchResponseActionFuture;
     try (ThreadContext.StoredContext ignored =
         client.threadPool().getThreadContext().stashContext()) {