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https://issues.apache.org/jira/browse/HBASE-14361?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14732307#comment-14732307
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Heng Chen commented on HBASE-14361:
-----------------------------------
In standalone mode, there are two RS, So we can see there are two
{{ConnectionImplementation}} created by
{{org.apache.hadoop.hbase.replication.regionserver.ReplicationSink.<init>(ReplicationSink.java:91)}}
and
{{org.apache.hadoop.hbase.regionserver.HRegionServer.createClusterConnection(HRegionServer.java:686)}}
> Investigate unused connection objects
> -------------------------------------
>
> Key: HBASE-14361
> URL: https://issues.apache.org/jira/browse/HBASE-14361
> Project: HBase
> Issue Type: Task
> Components: Client
> Reporter: Nick Dimiduk
> Attachments: hmaster.log
>
>
> Over on HBASE-12911 I have a patch that registers Connection instances with
> the metrics system. In both standalone server and tll client applications, I
> was surprised to see multiple connection objects showing up that are unused.
> These are pretty heavy objects, including lots of client threads for the
> batch pool. We should track these down and remove them -- if they're not some
> kind of phantom artifacts of my WIP patch over there.
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