AHeise commented on a change in pull request #9383: [FLINK-13248] [runtime]
Adding processing of downstream messages in AsyncWaitOperator's wait loops
URL: https://github.com/apache/flink/pull/9383#discussion_r314638184
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File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/async/AsyncWaitOperator.java
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@@ -402,8 +402,10 @@ private void stopResources(boolean waitForShutdown)
throws InterruptedException
pendingStreamElementQueueEntry = streamElementQueueEntry;
while (!queue.tryPut(streamElementQueueEntry)) {
+ yieldToDownstream();
+ // wait for the emitter thread to output the remaining
elements
// we wait for the emitter to notify us if the queue
has space left again
- checkpointingLock.wait();
+ checkpointingLock.wait(1);
Review comment:
wait(1) is needed for the emitter thread to do something (working on getting
rid of emitter thread in a separate effort). A full wait would ofc not allow us
to interleave mailbox messages.
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