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https://issues.apache.org/jira/browse/HDFS-10401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15283840#comment-15283840
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Yiqun Lin commented on HDFS-10401:
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The max non heap memory shows -1B might means that this value is undefined. If
I am think right, maybe we can optimize this for showing in {{dfshealth.html}}.
> Negative memory stats in NameNode web interface
> -----------------------------------------------
>
> Key: HDFS-10401
> URL: https://issues.apache.org/jira/browse/HDFS-10401
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.7.2
> Environment: Ubuntu 16.04, openjdk version "1.8.0_91", Hadoop-2.7.2
> Reporter: Dmitry Sivachenko
> Priority: Minor
>
> In NameNode's web interface I see negative memory usage, which looks like a
> bug:
> Non Heap Memory used 46.2 MB of 46.84 MB Commited Non Heap Memory. Max Non
> Heap Memory is -1 B.
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