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https://issues.apache.org/jira/browse/PHOENIX-4344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16665723#comment-16665723
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Lars Hofhansl commented on PHOENIX-4344:
----------------------------------------

Another thought... Since we'd likely do many request from a Mapper to the 
_same_ local region server we should probably also set these two properties on 
the client.
{code:java}
<property>
 <name>hbase.client.ipc.pool.type</name>
 <value>RoundRobinPool</value>
</property>
<property>
 <name>hbase.client.ipc.pool.size</name>
 <value>10</value>
</property>{code}
 

> MapReduce Delete Support
> ------------------------
>
>                 Key: PHOENIX-4344
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4344
>             Project: Phoenix
>          Issue Type: New Feature
>    Affects Versions: 4.12.0
>            Reporter: Geoffrey Jacoby
>            Assignee: Geoffrey Jacoby
>            Priority: Major
>
> Phoenix already has the ability to use MapReduce for asynchronous handling of 
> long-running SELECTs. It would be really useful to have this capability for 
> long-running DELETEs, particularly of tables with indexes where using HBase's 
> own MapReduce integration would be prohibitively complicated. 



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