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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6877) Coprocessor exec result is incorrect when region is in splitting
Date Tue, 25 Sep 2012 06:31:07 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13462482#comment-13462482
] 

Andrew Purtell commented on HBASE-6877:
---------------------------------------

Reissuing requests to the other daughter when a split is detected makes sense. Minor issue
with the patch is by dropping "actual" in method names and variables, the result seems to
read better.
                
> Coprocessor exec result is incorrect when region is in splitting 
> -----------------------------------------------------------------
>
>                 Key: HBASE-6877
>                 URL: https://issues.apache.org/jira/browse/HBASE-6877
>             Project: HBase
>          Issue Type: Bug
>          Components: Coprocessors
>    Affects Versions: 0.94.1
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>            Priority: Critical
>         Attachments: HBASE-6877.patch
>
>
> When we execute the coprocessor, we will called HTable#getStartKeysInRange first and
get the Keys to exec coprocessor,
> if then some regions are split before execCoprocessor RPC, the Keys are something wrong
now, and the result we get is not integrated, 
> for example:
> parent region is split into daughter region A and daughter region B,
> we executed coprocessor on the parent region, but the result data is only daughter region
A or daughter region B

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