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From "Nicolas Liochon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6870) HTable#coprocessorExec always scan the whole table
Date Fri, 29 Mar 2013 19:31:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13617635#comment-13617635
] 

Nicolas Liochon commented on HBASE-6870:
----------------------------------------

I'm bumping the priority a little, because imho it means that anything that happen on .meta.
will have a strong impact for anyone using coprocessors. I can help if needed of course.
                
> HTable#coprocessorExec always scan the whole table 
> ---------------------------------------------------
>
>                 Key: HBASE-6870
>                 URL: https://issues.apache.org/jira/browse/HBASE-6870
>             Project: HBase
>          Issue Type: Improvement
>          Components: Coprocessors
>    Affects Versions: 0.94.1, 0.95.0, 0.96.0
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>         Attachments: HBASE-6870.patch, HBASE-6870-testPerformance.patch, HBASE-6870v2.patch,
HBASE-6870v3.patch
>
>
> In current logic, HTable#coprocessorExec always scan the whole table, its efficiency
is low and will affect the Regionserver carrying .META. under large coprocessorExec requests

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