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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4210) Allow coprocessor to interact with batches per region sent from a client(?)
Date Fri, 11 Jan 2013 18:50:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13551386#comment-13551386
] 

Andrew Purtell commented on HBASE-4210:
---------------------------------------

An option here would be to allocate an internal identifier for every operation, corresponding
to the user RPC, and then no matter how many units of work that is broken down internally
the RPC ID would be carried through. Then there could be a CP hook at step 3 which announces
processing on a given RPC (batch). The other hooks will get the ID somehow so the CP can correlate.
Then finally at step 8 an upcall notifying that processing the given RPC ID is completed (or
errored out).

                
> Allow coprocessor to interact with batches per region sent from a client(?)
> ---------------------------------------------------------------------------
>
>                 Key: HBASE-4210
>                 URL: https://issues.apache.org/jira/browse/HBASE-4210
>             Project: HBase
>          Issue Type: New Feature
>    Affects Versions: 0.94.0
>            Reporter: Lars Hofhansl
>            Assignee: Anoop Sam John
>            Priority: Minor
>             Fix For: 0.96.0, 0.94.5
>
>
> Currently the coprocessor write hooks - {pre|post}{Put|Delete} - are strictly one row|cell
operations.
> It might be a good idea to allow a coprocessor to deal with batches of puts and deletes
as they arrive from the client.

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