m-trieu commented on code in PR #32774:
URL: https://github.com/apache/beam/pull/32774#discussion_r1801539649


##########
runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/windmill/client/AbstractWindmillStream.java:
##########
@@ -278,24 +347,73 @@ public String backendWorkerToken() {
   }
 
   @Override
-  public void shutdown() {
+  public final void shutdown() {
+    // Don't lock here as isShutdown checks are used in the stream to free 
blocked
+    // threads or as exit conditions to loops.
     if (isShutdown.compareAndSet(false, true)) {
       requestObserver()
           .onError(new WindmillStreamShutdownException("Explicit call to 
shutdown stream."));
+      shutdownInternal();
+      shutdownTime.set(DateTime.now());

Review Comment:
   done



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