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From "Rohith Sharma K S (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7602) NM should reference the singleton JvmMetrics instance
Date Wed, 03 Jan 2018 10:36:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16309447#comment-16309447

Rohith Sharma K S commented on YARN-7602:

thanks Haibo for working on this. 
+1 lgtm as well!

> NM should reference the singleton JvmMetrics instance
> -----------------------------------------------------
>                 Key: YARN-7602
>                 URL: https://issues.apache.org/jira/browse/YARN-7602
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 3.0.0-beta1
>            Reporter: Haibo Chen
>            Assignee: Haibo Chen
>         Attachments: YARN-7602.00.patch, YARN-7602.01.patch, YARN-7602.02.patch, YARN-7602.03.patch
> NM does not reference the singleton JvmMetrics instance in its NodeManagerMetrics. This
will easily cause NM to crash if any of the node manager components tries to register JvmMetrics.
An example of this is TimelineCollectorManager that hosts a HBaseClient that registers JvmMetrics
again. See HBASE-19409 for details.

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