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https://issues.apache.org/jira/browse/HBASE-6409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13450142#comment-13450142
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Elliott Clark commented on HBASE-6409:
--------------------------------------

Yeah mostly.  There were two things that I noticed that I was wondering about:

* In the hadoop-common version every MutableQuantile creates their own 
executor.  In the one attached here the executor is shared.  Is there an issue 
with sharing one executor between many MutableQuantiles ?
* In the hadoop-common version the executor spins up a thread that's not a 
deamon thread. Is that intentional and does it cause an issue when shutting 
down daemons ?
                
> Create histogram class for metrics 2
> ------------------------------------
>
>                 Key: HBASE-6409
>                 URL: https://issues.apache.org/jira/browse/HBASE-6409
>             Project: HBase
>          Issue Type: Sub-task
>    Affects Versions: 0.96.0
>            Reporter: Elliott Clark
>            Assignee: Elliott Clark
>            Priority: Blocker
>         Attachments: HBASE-6409-0.patch, HBASE-6409-1.patch, 
> HBASE-6409-2.patch, HBASE-6409-3.patch
>
>
> Create the replacement for MetricsHistogram and PersistantTimeVaryingRate 
> classes.

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