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From "Xiaobing Zhou (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HDFS-10917) Collect peer performance statistics on DataNode.
Date Thu, 22 Dec 2016 08:56:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10917?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15769517#comment-15769517
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Xiaobing Zhou edited comment on HDFS-10917 at 12/22/16 8:56 AM:
----------------------------------------------------------------

Posted v4 patch.
# added license to two files.
# fix check style issues.
# added collecting thread local states.


was (Author: xiaobingo):
Posted v4 patch.
# added license to two files.
# fix check style issues.

> Collect peer performance statistics on DataNode.
> ------------------------------------------------
>
>                 Key: HDFS-10917
>                 URL: https://issues.apache.org/jira/browse/HDFS-10917
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 2.8.0
>            Reporter: Xiaobing Zhou
>            Assignee: Xiaobing Zhou
>         Attachments: HDFS-10917.000.patch, HDFS-10917.001.patch, HDFS-10917.002.patch,
HDFS-10917.003.patch, HDFS-10917.004.patch
>
>
> DataNodes already detect if replication pipeline operations are slow and log warnings.
For the purpose of analysis, performance metrics are desirable. This proposes adding them
on DataNodes. 



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