[jira] [Work logged] (BEAM-6440) FlinkTimerInternals memory leak

Tue, 15 Jan 2019 10:38:12 -0800 


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https://issues.apache.org/jira/browse/BEAM-6440?focusedWorklogId=185376&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-185376
 ]

ASF GitHub Bot logged work on BEAM-6440:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 15/Jan/19 18:37
            Start Date: 15/Jan/19 18:37
    Worklog Time Spent: 10m 
      Work Description: mxm commented on pull request #7517: [BEAM-6440] Fix 
leakage of timer de-duplication map
URL: https://github.com/apache/beam/pull/7517
 
 
   The FlinkStateInternals use a keyed map of pending timers to make up for 
Flink's
   limitation to only be able to delete timers with their original timestamp, 
not
   via timer id.
   
   The Map leaked memory because subclasses of DoFnOperator overwrote 
`fireTimer`
   which was responsible for performing cleanup in the map upon firing a timer.
   
   Post-Commit Tests Status (on master branch)
   
------------------------------------------------------------------------------------------------
   
   Lang | SDK | Apex | Dataflow | Flink | Gearpump | Samza | Spark
   --- | --- | --- | --- | --- | --- | --- | ---
   Go | [![Build 
Status](https://builds.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/)
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   Java | [![Build 
Status](https://builds.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/)
 | [![Build 
Status](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Apex/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Apex/lastCompletedBuild/)
 | [![Build 
Status](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/)
 | [![Build 
Status](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/)<br>[![Build
 
Status](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/)<br>[![Build
 
Status](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/)
 | [![Build 
Status](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Gearpump/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Gearpump/lastCompletedBuild/)
 | [![Build 
Status](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/)
 | [![Build 
Status](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/)
   Python | [![Build 
Status](https://builds.apache.org/job/beam_PostCommit_Python_Verify/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Python_Verify/lastCompletedBuild/)
 | --- | [![Build 
Status](https://builds.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/)
 </br> [![Build 
Status](https://builds.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/)
 | [![Build 
Status](https://builds.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/badge/icon)](https://builds.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/)
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Issue Time Tracking
-------------------

            Worklog Id:     (was: 185376)
            Time Spent: 10m
    Remaining Estimate: 0h

> 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: 10m
>  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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