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Signed-off-by: xinyual <[email protected]>

plugin/src/main/java/org/opensearch/ml/action/models/DeleteModelTransportAction.java

@@ -352,6 +352,7 @@ private void checkSearchPipelineBeforeDeleteModel(String modelId, ActionListener
     }
 
     private void checkDownstreamTaskBeforeDeleteModel(String modelId, Boolean isHidden, ActionListener<DeleteResponse> actionListener) {
+        // Now 3 is: 1. Agent 2. Search pipeline 3. ingest pipeline
         CountDownLatch countDownLatch = new CountDownLatch(3);
         AtomicBoolean noneBlocked = new AtomicBoolean(true);
         ConcurrentLinkedQueue<String> errorMessages = new ConcurrentLinkedQueue<>();