ayberk commented on a change in pull request #17162:
URL: https://github.com/apache/beam/pull/17162#discussion_r833692179
##########
File path:
runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/windmill/GrpcWindmillServer.java
##########
@@ -936,7 +936,11 @@ protected void onResponse(StreamingGetWorkResponseChunk
chunk) {
.execute(
() -> {
try {
- send(extension);
+ synchronized (this) {
+ if (!clientClosed.get()) {
Review comment:
+1 to throwing `IllegalStateException` if the stream is closed.
Otherwise we risk having regressions by changing the behavior. It's safer to
throw the exception for the purposes of yoru change.
##########
File path:
runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/windmill/GrpcWindmillServer.java
##########
@@ -936,7 +936,11 @@ protected void onResponse(StreamingGetWorkResponseChunk
chunk) {
.execute(
() -> {
try {
- send(extension);
+ synchronized (this) {
+ if (!clientClosed.get()) {
Review comment:
+1 to throwing `IllegalStateException` if the stream is closed.
Otherwise we risk having regressions by changing the behavior. It's safer to
throw the exception for the purposes of your change.
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