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https://issues.apache.org/jira/browse/HBASE-9410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13778485#comment-13778485
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Lars Hofhansl commented on HBASE-9410:
--------------------------------------

Nothing jumps out there. Can you do a jstack on the client as well while the 
test is running?

                
> Concurrent coprocessor endpoint executions slow down exponentially
> ------------------------------------------------------------------
>
>                 Key: HBASE-9410
>                 URL: https://issues.apache.org/jira/browse/HBASE-9410
>             Project: HBase
>          Issue Type: Bug
>          Components: Coprocessors
>    Affects Versions: 0.94.11
>         Environment: Amazon ec2
>            Reporter: Kirubakaran Pakkirisamy
>         Attachments: jstack1.log, jstack2.log, jstack3.log, jstack.log, 
> SearchEndpoint.java, Search.java, SearchProtocol.java
>
>
> Multiple concurrent executions of coprocessor endpoints slow down 
> drastically. It is compounded further when there are more Htable connection 
> setups happening.

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