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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6110) adding more slow action log in critical write path
Date Sat, 31 May 2014 00:17:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14014412#comment-14014412
] 

Hudson commented on HDFS-6110:
------------------------------

SUCCESS: Integrated in Hadoop-trunk-Commit #5638 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/5638/])
Move HDFS-6110 down to 2.5.0 section of CHANGES.txt (wang: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1598787)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt


> adding more slow action log in critical write path
> --------------------------------------------------
>
>                 Key: HDFS-6110
>                 URL: https://issues.apache.org/jira/browse/HDFS-6110
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 3.0.0, 2.3.0
>            Reporter: Liang Xie
>            Assignee: Liang Xie
>             Fix For: 2.5.0
>
>         Attachments: HDFS-6110-v2.txt, HDFS-6110.txt, HDFS-6110v3.txt, HDFS-6110v4.txt,
HDFS-6110v5.txt, HDFS-6110v6.txt
>
>
> After digging a HBase write spike issue caused by slow buffer io in our cluster, just
realize we'd better to add more abnormal latency warning log in write flow, such that if other
guys hit HLog sync spike, we could know more detail info from HDFS side at the same time.
> Patch will be uploaded soon.



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