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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2017/04/20 12:35:04 UTC

[jira] [Commented] (FLINK-6341) JobManager can go to definite message sending loop when TaskManager registered

    [ https://issues.apache.org/jira/browse/FLINK-6341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15976609#comment-15976609 ] 

ASF GitHub Bot commented on FLINK-6341:
---------------------------------------

GitHub user WangTaoTheTonic opened a pull request:

    https://github.com/apache/flink/pull/3745

    [FLINK-6341]Don't let JM fall into infinite loop

    When TaskManager register to JobManager, JM will send a "NotifyResourceStarted" message to kick off Resource Manager, then trigger a reconnection to resource manager through sending a "TriggerRegistrationAtJobManager".
    When the ref of resource manager in JobManager is not None and the reconnection is to same resource manager, JobManager will go to a infinite message sending loop which will always sending himself a "ReconnectResourceManager" every 2 seconds.
    We have already observed that phonomenon. More details, check how JobManager handles `ReconnectResourceManager`.

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

    $ git pull https://github.com/WangTaoTheTonic/flink FLINK-6341

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

    https://github.com/apache/flink/pull/3745.patch

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

    This closes #3745
    
----
commit 8eb4dd42a71d9830c91b3db824e3133ce3d35c08
Author: WangTaoTheTonic <wa...@huawei.com>
Date:   2017-04-20T12:28:10Z

    Don't let JM fall into infinite loop

----


> JobManager can go to definite message sending loop when TaskManager registered
> ------------------------------------------------------------------------------
>
>                 Key: FLINK-6341
>                 URL: https://issues.apache.org/jira/browse/FLINK-6341
>             Project: Flink
>          Issue Type: Bug
>          Components: JobManager
>            Reporter: Tao Wang
>            Assignee: Tao Wang
>
> When TaskManager register to JobManager, JM will send a "NotifyResourceStarted" message to kick off Resource Manager, then trigger a reconnection to resource manager through sending a "TriggerRegistrationAtJobManager".
> When the ref of resource manager in JobManager is not None and the reconnection is to same resource manager, JobManager will go to a infinite message sending loop which will always sending himself a "ReconnectResourceManager" every 2 seconds.
> We have already observed that phonomenon. More details, check how JobManager handles `ReconnectResourceManager`.



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