[jira] [Assigned] (FLINK-19462) Checkpoint statistics for unfinished task snapshots

["Chesnay Schepler (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-19462?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chesnay Schepler reassigned FLINK-19462:
----------------------------------------

    Assignee: Roman Khachatryan

> Checkpoint statistics for unfinished task snapshots
> ---------------------------------------------------
>
>                 Key: FLINK-19462
>                 URL: https://issues.apache.org/jira/browse/FLINK-19462
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Checkpointing, Runtime / Metrics
>            Reporter: Nico Kruber
>            Assignee: Roman Khachatryan
>            Priority: Major
>              Labels: pull-request-available, usability
>
> If a checkpoint times out, there are currently no stats on the not-yet-finished tasks in the Web UI, so you have to crawl into (debug?) logs.
> It would be nice to have these incomplete stats in there instead so that you know quickly what was going on. I could think of these ways to accomplish this:
>  * the checkpoint coordinator could ask the TMs for it after failing the checkpoint or
>  * the TMs could send the stats when they notice that the checkpoint is aborted
> Maybe there are more options, but I think, this improvement in general would benefit debugging checkpoints.



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