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From "Jitendra Nath Pandey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8991) Provide information on BPOfferService in DN JMX
Date Fri, 01 Jul 2016 22:29:11 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15359754#comment-15359754
] 

Jitendra Nath Pandey commented on HDFS-8991:
--------------------------------------------

Could you please paste the out of the jmx before and after this patch, covering the relevant
parts of the output?

> Provide information on BPOfferService in DN JMX
> -----------------------------------------------
>
>                 Key: HDFS-8991
>                 URL: https://issues.apache.org/jira/browse/HDFS-8991
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>            Reporter: Haohui Mai
>            Assignee: Mingliang Liu
>         Attachments: HDFS-8991.000.patch, HDFS-8991.001.patch
>
>
> In cases like HDFS-7714 where the BPOfferService thread is missing, which require nontrivial
effort to debug that which NN that the DN thinks it active / standby.
> It would make sense to make the information more accessible through JMX or Web UI.



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