mxm commented on a change in pull request #13105:
URL: https://github.com/apache/beam/pull/13105#discussion_r517569105
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File path:
runners/flink/src/main/java/org/apache/beam/runners/flink/translation/wrappers/streaming/ExecutableStageDoFnOperator.java
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@@ -502,6 +690,8 @@ public void close() throws Exception {
processWatermark1(Watermark.MAX_WATERMARK);
while (getCurrentOutputWatermark() <
Watermark.MAX_WATERMARK.getTimestamp()) {
invokeFinishBundle();
+ // Sleep for 5s to wait for any timer to be fired.
+ Thread.sleep(5000);
Review comment:
Makes sense. Thanks for clarifying. Is there a way to only sleep if
there are such pending timers and then wait for precisely as long as the
maximum of such timers? It just seems like a workaround to always wait 5
seconds. Also, I'm surprised these timers get fired at all, since newer
versions of Flink stop processing timer execution once closing the operator
(that's why we are draining the timers manually in `super.close()`).
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