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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5530) The "Heap Size" in HDFS web ui may not be accurate
Date Wed, 25 Mar 2009 20:32:02 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12689232#action_12689232
] 

Tsz Wo (Nicholas), SZE commented on HADOOP-5530:
------------------------------------------------

I think this is a presentation problem.  The text "10.01 GB / 10.01 GB (100%)" seems saying
that 100% of memory is being used but it may not be the case.  Unfortunately, there is no
easy way to obtain accurate memory usage.  How about we change it to "maxMemory= 10.01 GB,
totalMemory = 10.01 GB, freeMemory = xx".  Then it will be less confusing.

> The "Heap Size" in HDFS web ui may not be accurate
> --------------------------------------------------
>
>                 Key: HADOOP-5530
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5530
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Tsz Wo (Nicholas), SZE
>
> It seems that the Heap Size shown in HDFS web UI is not accurate.  It keeps showing 100%
of usage.  e.g.
> {noformat}
> Heap Size is 10.01 GB / 10.01 GB (100%) 
> {noformat}

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