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https://issues.apache.org/jira/browse/FLINK-5063?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephan Ewen resolved FLINK-5063.
---------------------------------
    Resolution: Fixed

Fixed in
  - 1.1.4 via 4daf3bbc1e0251e1e84d799421dae9e3fa2363fc
  - 1.2.0 via 72b295b3b52dff2d0bc5b78881826e8936c370ff

> State handles are not properly cleaned up for declined or expired checkpoints
> -----------------------------------------------------------------------------
>
>                 Key: FLINK-5063
>                 URL: https://issues.apache.org/jira/browse/FLINK-5063
>             Project: Flink
>          Issue Type: Bug
>          Components: State Backends, Checkpointing
>    Affects Versions: 1.2.0, 1.1.3
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>            Priority: Critical
>             Fix For: 1.2.0, 1.1.4
>
>
> In case that a {{Checkpoint}} is declined or expires, the 
> {{CheckpointCoordinator}} will dispose the {{PendingCheckpoint}}. Disposing 
> the {{PendingCheckpoint}} entails that all so far registered 
> {{SubtaskStates}} of the acknowledged {{Tasks}} are discarded. However, all 
> late arriving acknowledge messages are simply ignored without properly 
> discarding the transmitted state handles. This can lead to a cluttering of 
> checkpoint directory since the checkpoint files of late or unknown 
> acknowledge checkpoint messages are never deleted.
> I propose to properly discard the state handles at the 
> {{CheckpointCoordinator}} if receiving a late acknowledge message or an 
> acknowledge message for an unknown {{ExecutionAttemptID}} belonging to the 
> job of the {{CheckpointCoordinator}}. However, checkpoint messages belonging 
> to a different job won't be handled and simply ignored.



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