m-trieu commented on code in PR #32774:
URL: https://github.com/apache/beam/pull/32774#discussion_r1844393236
##########
runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/windmill/client/grpc/observers/DirectStreamObserver.java:
##########
@@ -162,24 +170,23 @@ public void onNext(T value) throws
StreamObserverCancelledException {
public void onError(Throwable t) {
isReadyNotifier.forceTermination();
synchronized (lock) {
- markClosedOrThrow();
- outboundObserver.onError(t);
+ if (!isClosed) {
Review Comment:
done
also caught the illegal state exception in `AbstractWindmillStream#halfClose`
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