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https://issues.apache.org/jira/browse/HDFS-7836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14347999#comment-14347999
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Colin Patrick McCabe commented on HDFS-7836:
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I think it makes sense to have total heapsize in a JMX counter, if it's not
already there somewhere. It's a pretty easy number to get from the OS,
although there are confounding factors like shared libraries and shared memory
segments. But in general, those should be minor contributors.
> BlockManager Scalability Improvements
> -------------------------------------
>
> Key: HDFS-7836
> URL: https://issues.apache.org/jira/browse/HDFS-7836
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Charles Lamb
> Assignee: Charles Lamb
> Attachments: BlockManagerScalabilityImprovementsDesign.pdf
>
>
> Improvements to BlockManager scalability.
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