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From "Mingliang Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8991) Provide information on BPOfferService in DN JMX
Date Fri, 01 Jul 2016 23:59:11 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15359854#comment-15359854

Mingliang Liu commented on HDFS-8991:

Thanks [~jnp] for the review and comment. For the mini-dfs cluster, the hostname will be localhost
and only one entry in the HA case.

Before this patch:
- Non-HA:
- HA:

After the patch:
- Non-HA:
- HA:

> 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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