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https://issues.apache.org/jira/browse/BEAM-6440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16743288#comment-16743288
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Maximilian Michels commented on BEAM-6440:
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Thank you for the profiling. This was very helpful. I have a PR out.

> FlinkTimerInternals memory leak
> -------------------------------
>
>                 Key: BEAM-6440
>                 URL: https://issues.apache.org/jira/browse/BEAM-6440
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-flink
>    Affects Versions: 2.9.0
>            Reporter: Thomas Weise
>            Assignee: Maximilian Michels
>            Priority: Major
>         Attachments: image-2019-01-15-10-31-43-618.png
>
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> After running a portable streaming app for 2-3 days, we see heap space 
> exhausted. Memory analysis shows large number of TimerData objects referenced 
> by heap state.



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