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https://issues.apache.org/jira/browse/HBASE-14743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15358025#comment-15358025
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Appy commented on HBASE-14743:
------------------------------
So here's what am seeing.
1st screenshot: memory manager metrics which [~reidchan] is adding in this jira
are getting populated.
2nd: they mysteriously get cleared.
But that's also happening to other metrics (3rd and 4th screenshots) so no
point blocking this patch on it.
+1
*Screenshots*
Memory manager histogram working
!test2_1.png|height=400!
Memory manager histogram empty
!test2_2.png|height=400!
IPC metrics showing same behavior. It took 10+ tries to capture these because
after executing Put from shell, by the time i switched to visualvm and
refreshed, they'll be gone.
!test2_3.png|height=400!
!test2_4.png|height=400!
> Add metrics around HeapMemoryManager
> ------------------------------------
>
> Key: HBASE-14743
> URL: https://issues.apache.org/jira/browse/HBASE-14743
> Project: HBase
> Issue Type: Improvement
> Reporter: Elliott Clark
> Assignee: Reid Chan
> Priority: Minor
> Attachments: HBASE-14743.001.patch, HBASE-14743.002.patch,
> HBASE-14743.003.patch, HBASE-14743.004.patch, HBASE-14743.005.patch,
> HBASE-14743.006.patch, HBASE-14743.007.patch, HBASE-14743.008.patch,
> HBASE-14743.009.patch, HBASE-14743.009.rw3.patch, HBASE-14743.009.v2.patch,
> HBASE-14743.010.patch, Metrics snapshot 2016-6-30.png, Screen Shot 2016-06-16
> at 5.39.13 PM.png, test2_1.png, test2_2.png, test2_3.png, test2_4.png
>
>
> it would be good to know how many invocations there have been.
> How many decided to expand memstore.
> How many decided to expand block cache.
> How many decided to do nothing.
> etc.
> When that's done use those metrics to clean up the tests.
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