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https://issues.apache.org/jira/browse/YARN-1221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13778188#comment-13778188
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Siqi Li commented on YARN-1221:
-------------------------------
inside the reserve method, there are two methods got called
{noformat}
getMetrics().reserveResource(application.getUser(), container.getResource());
getMetrics().reserveResource(app.getUser(), container.getResource());
{noformat}
application.getUser() and app.getUser() return the same user. Therefore, the
same metrics get increased twice.
However, inside the unreserve method, there is only one method got called
{noformat}
getMetrics().unreserveResource(application.getUser(),
rmContainer.getContainer().getResource()); {noformat}
In conclusion, the reserved memory gets increased twice and decreased only once.
As for the displayed total memory, it should equal to available memory. Since,
the available memory is actually the total memory, and it will not decrease
when some memory is allocated to mr jobs
> 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
> Attachments: YARN1221_v1.patch.txt
>
>
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