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https://issues.apache.org/jira/browse/FLINK-4410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15571931#comment-15571931
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Robert Metzger commented on FLINK-4410:
---------------------------------------

I'll add the CheckpointMetrics to the coordinator and the web frontend.

> Report more information about operator checkpoints
> --------------------------------------------------
>
>                 Key: FLINK-4410
>                 URL: https://issues.apache.org/jira/browse/FLINK-4410
>             Project: Flink
>          Issue Type: Improvement
>          Components: State Backends, Checkpointing, Webfrontend
>    Affects Versions: 1.1.2
>            Reporter: Ufuk Celebi
>             Fix For: 1.2.0
>
>
> Checkpoint statistics contain the duration of a checkpoint, measured as from 
> the CheckpointCoordinator's start to the point when the acknowledge message 
> came.
> We should additionally expose
>   - duration of the synchronous part of a checkpoint
>   - duration of the asynchronous part of a checkpoint
>   - number of bytes buffered during the stream alignment phase
>   - duration of the stream alignment phase
> Note: In the case of using *at-least once* semantics, the latter two will 
> always be zero.



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