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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-8946) TaskManager stop sending metrics after JobManager failover
Date Wed, 23 May 2018 08:31:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-8946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16486897#comment-16486897
] 

ASF GitHub Bot commented on FLINK-8946:
---------------------------------------

Github user zentol commented on the issue:

    https://github.com/apache/flink/pull/5869
  
    that shouldn't be possible, as all tasks are removed when a TM disassociates from the
JM which also implies removing all metrics related to a specific task.


> TaskManager stop sending metrics after JobManager failover
> ----------------------------------------------------------
>
>                 Key: FLINK-8946
>                 URL: https://issues.apache.org/jira/browse/FLINK-8946
>             Project: Flink
>          Issue Type: Bug
>          Components: Metrics, TaskManager
>    Affects Versions: 1.4.2
>            Reporter: Truong Duc Kien
>            Assignee: vinoyang
>            Priority: Critical
>             Fix For: 1.5.0
>
>
> Running in Yarn-standalone mode, when the Job Manager performs a failover, all TaskManager
that are inherited from the previous JobManager will not send metrics to the new JobManager
and other registered metric reporters.
>  
> A cursory glance reveal that these line of code might be the cause
> [https://github.com/apache/flink/blob/a3478fdfa0f792104123fefbd9bdf01f5029de51/flink-runtime/src/main/scala/org/apache/flink/runtime/taskmanager/TaskManager.scala#L1082-L1086]
> Perhap the TaskManager close its metrics group when disassociating JobManager, but not
creating a new one on fail-over association ?
>  



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