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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-5962) Cancel checkpoint canceller tasks in CheckpointCoordinator
Date Fri, 21 Apr 2017 10:32:04 GMT

    [ https://issues.apache.org/jira/browse/FLINK-5962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15978471#comment-15978471
] 

ASF GitHub Bot commented on FLINK-5962:
---------------------------------------

Github user StephanEwen commented on the issue:

    https://github.com/apache/flink/pull/3679
  
    Good fix, merging this...


> Cancel checkpoint canceller tasks in CheckpointCoordinator
> ----------------------------------------------------------
>
>                 Key: FLINK-5962
>                 URL: https://issues.apache.org/jira/browse/FLINK-5962
>             Project: Flink
>          Issue Type: Bug
>          Components: State Backends, Checkpointing
>    Affects Versions: 1.2.0, 1.3.0
>            Reporter: Till Rohrmann
>            Assignee: Stephan Ewen
>            Priority: Critical
>             Fix For: 1.3.0, 1.2.1
>
>
> The {{CheckpointCoordinator}} register a canceller task for each running checkpoint.
The canceller task's responsibility is to cancel a checkpoint if it takes too long to complete.
We should cancel this task as soon as the checkpoint has been completed, because otherwise
we will keep many canceller tasks around. This can eventually lead to an OOM exception.



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