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https://issues.apache.org/jira/browse/HDFS-8116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14534141#comment-14534141
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Tsuyoshi Ozawa commented on HDFS-8116:
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I think we should performance test before and after this fix as [~andrew.wang]
mentioned.
> RollingWindowManager#getTopUserForMetric should check if LOG.isDebugEnabled()
> before LOG.debug()
> -------------------------------------------------------------------------------------------------
>
> Key: HDFS-8116
> URL: https://issues.apache.org/jira/browse/HDFS-8116
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 2.7.0
> Reporter: Xiaoyu Yao
> Assignee: Brahma Reddy Battula
> Priority: Trivial
> Labels: BB2015-05-TBR
> Attachments: HDFS-8116.patch
>
>
> RollingWindowManager#getTopUserForMetric should check if LOG.isDebugEnabled()
> before LOG.debug()
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