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https://issues.apache.org/jira/browse/HDFS-7836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14345610#comment-14345610
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Chris Nauroth commented on HDFS-7836:
-------------------------------------
I have one additional operability concern. With off-heaping, we're going to
lose the ability to measure the size of the block map with well-known tools
like {{jmap}}. Do you have any thoughts on compensating for this? Maybe we
could publish new JMX counters with the off-heap size stats?
> 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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