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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11180) Intermittent deadlock in NameNode when failover happens.
Date Wed, 30 Nov 2016 20:49:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15709732#comment-15709732
] 

Kihwal Lee commented on HDFS-11180:
-----------------------------------

+1 for the patch.

I am not sure whether it is worth mentioning the correctness of the value in the release note.
 For most metrics uses, if not all, the values won't be practically no more "inaccurate" than
before.

> Intermittent deadlock in NameNode when failover happens.
> --------------------------------------------------------
>
>                 Key: HDFS-11180
>                 URL: https://issues.apache.org/jira/browse/HDFS-11180
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.6.0
>            Reporter: Abhishek Modi
>            Assignee: Akira Ajisaka
>            Priority: Blocker
>              Labels: high-availability
>         Attachments: HDFS-11180.00.patch, HDFS-11180.01.patch, HDFS-11180.02.patch, HDFS-11180.03.patch,
HDFS-11180.04.patch, jstack.log
>
>
> It is happening due to metrics getting updated at the same time when failover is happening.
Please find attached jstack at that point of time.



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