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https://issues.apache.org/jira/browse/HBASE-9410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13755805#comment-13755805
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Andrew Purtell commented on HBASE-9410:
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Looks like you configured 1000 IPC handlers? This should be set to
approximately the number of cores and spindles of the server hardware.
Scrolling through some of that 7 MB log (can you attach only one jstack you
think is relevant?) I don't see any IPC handlers doing any work, but it's too
big to look at in total.
> 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: 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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