mxm commented on a change in pull request #13105:
URL: https://github.com/apache/beam/pull/13105#discussion_r516664835
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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:
This is a bug then. All processing timers should be fired on `close()`.
It would be great to get rid of the sleep which can have unexpected side
effects, e.g. when operators are chained in Flink.
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