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https://issues.apache.org/jira/browse/BEAM-11210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17229888#comment-17229888
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Maximilian Michels commented on BEAM-11210:
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Processing timers have to be manually drained after the operator shuts down and
{{close()}} is called. This does not happen if checkpointing is enabled or the
\{{shutdownSourcesAfterIdleMs}} is used. Context:
https://github.com/apache/beam/pull/13105#discussion_r521252916
> ExecutableStageDoFnOperator should fire processing time timers properly
> instead of draining it directly when close() happens
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: BEAM-11210
> URL: https://issues.apache.org/jira/browse/BEAM-11210
> Project: Beam
> Issue Type: Improvement
> Components: runner-flink
> Reporter: Boyuan Zhang
> Priority: P2
>
> We hit this case when processing time timer holds the watermark but at the
> same time we are closing the operator.
> One typical case is when SDF sets timer for rescheduling residuals.
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