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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11054) Suppress verbose log message in BlockPlacementPolicyDefault
Date Wed, 26 Oct 2016 02:56:59 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11054?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arpit Agarwal updated HDFS-11054:
---------------------------------
       Resolution: Fixed
     Hadoop Flags: Reviewed
    Fix Version/s: 3.0.0-alpha2
                   2.8.0
           Status: Resolved  (was: Patch Available)

Pushed to 2.8.0.

Thank you for the contribution [~vagarychen] and thanks for the code review [~xyao]!

> Suppress verbose log message in BlockPlacementPolicyDefault
> -----------------------------------------------------------
>
>                 Key: HDFS-11054
>                 URL: https://issues.apache.org/jira/browse/HDFS-11054
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Arpit Agarwal
>            Assignee: Chen Liang
>             Fix For: 2.8.0, 3.0.0-alpha2
>
>         Attachments: HDFS-11054.001.patch, HDFS-11054.002.patch
>
>
> We saw an instance where this log message was generated millions of times in a short
time interval, slowing the NameNode to a crawl. It can probably be changed to log at DEBUG
level instead.
> {code}
>       if (cur == null) {
>         LOG.warn("No excess replica can be found. excessTypes: "+excessTypes+
>             ". moreThanOne: "+moreThanOne+". exactlyOne: "+exactlyOne+".");
>         break;
>       }
> {code}



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