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https://issues.apache.org/jira/browse/YARN-1221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13772015#comment-13772015
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Joep Rottinghuis commented on YARN-1221:
----------------------------------------

Sandy, we're seeing the same. At some point there is an overflow and numbers 
even show negative.
Looks like we have to first turn on logging for the FS so that we see more 
messages and figure out what is going on.
Code looked like this may be when reserved containers go into allocated, but 
the metric is not updated, or there is some synchronization issue with that 
update or something.
                
> With Fair Scheduler, reserved MB reported in RM web UI increases indefinitely
> -----------------------------------------------------------------------------
>
>                 Key: YARN-1221
>                 URL: https://issues.apache.org/jira/browse/YARN-1221
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager, scheduler
>    Affects Versions: 2.1.0-beta
>            Reporter: Sandy Ryza
>


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