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From "Gary Helmling (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-2002) Coprocessors: Client side support
Date Thu, 18 Nov 2010 23:53:15 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2002?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gary Helmling updated HBASE-2002:
---------------------------------

    Attachment: HBASE-2002_final.patch

Patch for commit from the HBASE-2321 & HBASE-2002 patch on review board.

The only changes from the review board patch are a merge up to the latest trunk for a clean
diff, some whitespace and line wrapping fixes, and bumping the RPC version number to 28, since
the connection header now contains the protocol interface name.

> Coprocessors: Client side support
> ---------------------------------
>
>                 Key: HBASE-2002
>                 URL: https://issues.apache.org/jira/browse/HBASE-2002
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Andrew Purtell
>            Assignee: Gary Helmling
>             Fix For: 0.92.0
>
>         Attachments: HBASE-2002_final.patch
>
>
> "High-level call interface for clients. Unlike RPC, calls addressed to rows or ranges
of rows. Coprocessor client library resolves to actual locations. Calls across multiple rows
automatically split into multiple parallelized RPCs"
> Generic multicall RPC facility which incorporates this and multiget/multiput/multidelete
and parallel scanners.
> Group and batch RPCs by region server. Track and retry outstanding RPCs. Ride over region
relocations. 
> Support addressing by explicit region identifier or by row key or row key range. 
> Include a facility for merging results client side. 

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