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https://issues.apache.org/jira/browse/YARN-1415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13824154#comment-13824154
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Siqi Li commented on YARN-1415:
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The first image shows that no job is running, and total memory is 1.9 TB
The second image shows that a simple wordcount job is running, and using 49 GB
memory. However, the total memory also got increased by 49 GB.
The same issue will occur when some jobs reserve a certain amount of memory. It
will get added into the total memory.
> In scheduler UI, including used memory in "Memory Total" seems to be
> inaccurate
> -------------------------------------------------------------------------------
>
> Key: YARN-1415
> URL: https://issues.apache.org/jira/browse/YARN-1415
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager, scheduler
> Reporter: Siqi Li
> Fix For: 2.1.0-beta
>
> Attachments: 1.png, 2.png
>
>
> "Memory Total" is currently a sum of availableMB, allocatedMB, and
> reservedMB.
> It seems that the term "availableMB" actually means "total memory", since it
> doesn't get decreased when some jobs use a certain amount of memory.
> Hence, the Memory Total should not include allocatedMB, or availableMB
> doesn't get updated properly.
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