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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-9598) [Checkpoints] The config Minimum Pause Between Checkpoints doesn't work when there's a checkpoint failure
Date Tue, 17 Jul 2018 07:08:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-9598?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16546112#comment-16546112

ASF GitHub Bot commented on FLINK-9598:

GitHub user Myasuka opened a pull request:


    [FLINK-9598] Refine java-doc about the min pause between checkpoints

    ## What is the purpose of the change
    This pull request makes docs about config `minPauseBetweenCheckpoints` more clear, since
many users felt confused about this config parameter as they found new checkpoint triggered
once checkpoints failed, related threads: [thread-1](http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/minPauseBetweenCheckpoints-for-failed-checkpoints-td20152.html),
    ## Brief change log
    Refine java-doc about the min pause between checkpoints.
    ## Verifying this change
    This change is a trivial rework without any test coverage.
    ## Does this pull request potentially affect one of the following parts:
      - Dependencies (does it add or upgrade a dependency): no
      - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no
      - The serializers: no
      - The runtime per-record code paths (performance sensitive): no
      - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing,
Yarn/Mesos, ZooKeeper: no
      - The S3 file system connector: no
    ## Documentation
      - Does this pull request introduce a new feature? no
      - If yes, how is the feature documented? JavaDocs

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/Myasuka/flink min-pause-checkpoint-FLINK-9598

Alternatively you can review and apply these changes as the patch at:


To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #6346
commit f47b487f74767859df19ac09ebc15bb4117a36f2
Author: Yun Tang <myasuka@...>
Date:   2018-07-17T06:44:44Z

    [FLINK-9598] Refactor java-doc about the min pause between checkpoints


> [Checkpoints] The config Minimum Pause Between Checkpoints doesn't work when there's
a checkpoint failure
> ---------------------------------------------------------------------------------------------------------
>                 Key: FLINK-9598
>                 URL: https://issues.apache.org/jira/browse/FLINK-9598
>             Project: Flink
>          Issue Type: Bug
>    Affects Versions: 1.3.2
>            Reporter: Prem Santosh
>            Assignee: Yun Tang
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: Screen Shot 2018-06-20 at 7.44.10 AM.png
> We have set the config Minimum Pause Between Checkpoints to be 10 min but noticed that
when a checkpoint fails (because it timesout before it completes) the application immediately
starts taking the next checkpoint. This basically stalls the application's progress since
its always taking checkpoints.
> [^Screen Shot 2018-06-20 at 7.44.10 AM.png] is a screenshot of this issue.
> Details:
>  * Running Flink-1.3.2 on EMR
>  * checkpoint timeout duration: 40 min
>  * minimum pause between checkpoints: 10 min
> There is also a [relevant thread|http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Having-a-backoff-while-experiencing-checkpointing-failures-td20618.html]
that I found on the Flink users group.

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