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From "Jingcheng Du (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-10169) Batch coprocessor
Date Mon, 16 Dec 2013 02:20:07 GMT
Jingcheng Du created HBASE-10169:

             Summary: Batch coprocessor
                 Key: HBASE-10169
                 URL: https://issues.apache.org/jira/browse/HBASE-10169
             Project: HBase
          Issue Type: New Feature
          Components: Coprocessors
            Reporter: Jingcheng Du

This is designed to improve the coprocessor invocation in the client side. 
Currently the coprocessor invocation is to send a call to each region. If there’s one region
server, and 100 regions are located in this server, each coprocessor invocation will send
100 calls, each call uses a single thread in the client side. The threads will run out soon
when the coprocessor invocations are heavy. 
In this design, all the calls to the same region server will be grouped into one in a single
coprocessor invocation. This call will be spread into each region in the server side, and
the results will be merged ahead in the server side before being returned to the client.

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