fix backend pick index out range

apache · Dec 21, 2024 · bcd1c7a · bcd1c7a
1 parent 93585ac
commit bcd1c7a
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/fe/fe-core/src/main/java/org/apache/doris/common/util/FetchRemoteTabletSchemaUtil.java b/fe/fe-core/src/main/java/org/apache/doris/common/util/FetchRemoteTabletSchemaUtil.java
@@ -107,7 +107,10 @@ public List<Column> fetch() {
         }
         // pick 2 random coordinator
         Collections.shuffle(coordinatorBackend);
-        coordinatorBackend = coordinatorBackend.subList(0, 2);
+        if (!coordinatorBackend.isEmpty()) {
+            coordinatorBackend = coordinatorBackend.subList(0, Math.min(2, coordinatorBackend.size()));
+            LOG.debug("pick coordinator backend {}", coordinatorBackend.get(0));
+        }
         PFetchRemoteSchemaRequest.Builder requestBuilder = PFetchRemoteSchemaRequest.newBuilder()
                                                                     .addAllTabletLocation(locations)
                                                                     .setIsCoordinator(true);