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Posted to issues@flink.apache.org by "Steve Jerman (JIRA)" <ji...@apache.org> on 2017/08/17 23:24:00 UTC

[jira] [Created] (FLINK-7473) Possible Leak in GlobalWindows

Steve Jerman created FLINK-7473:
-----------------------------------

             Summary: Possible Leak in GlobalWindows
                 Key: FLINK-7473
                 URL: https://issues.apache.org/jira/browse/FLINK-7473
             Project: Flink
          Issue Type: Bug
          Components: DataStream API
    Affects Versions: 1.3.2
         Environment: See attached project
            Reporter: Steve Jerman


Hi,

I have been wrestling with a issue with GlobalWindows. It seems like it leaks instances of InternalTimer.

I can't tell if it's a bug or my code so I created a 'minimal' project that has the issue...

If you run the Unit Test  in the attached and then monitor heap you will see that the number of InternalTimers continually increases. I added code to explicitly delete them.. doesn't seem to help.

If I comment out registerEventTimeTimer ... no leak :)

My suspicion is that PURGE/FIRE_AND_PURGE is leaving the timer in limbo.

Steve



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