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From "Xiaoyu Yao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11054) Suppress verbose log message in BlockPlacementPolicyDefault
Date Tue, 25 Oct 2016 22:09:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11054?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15606623#comment-15606623
] 

Xiaoyu Yao commented on HDFS-11054:
-----------------------------------

Thanks [~arpitagarwal] for reporting the issue and [~vagarychen] for posting the fix. NIT:
There is a minor tab/space issue in the 2nd line of the changed log. +1 pending Jenkins. 


> 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
>         Attachments: HDFS-11054.001.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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