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https://issues.apache.org/jira/browse/FLINK-4410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15569405#comment-15569405
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Stephan Ewen commented on FLINK-4410:
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Code that gathers additional metrics is integrated. What is missing is the code
that collects the information on the side of the CheckpointCoordinator and
visualizes it in 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
> Assignee: Stephan Ewen
> 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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