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From "chunhui shen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6870) HTable#coprocessorExec always scan the whole table
Date Sat, 20 Apr 2013 09:13:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13637168#comment-13637168
] 

chunhui shen commented on HBASE-6870:
-------------------------------------

[~liochon]
Thanks for the suggestion.
Addressing these comments in patch v6.
Now using a Pair of List instead of Map.
                
> 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, 0.95.2
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>            Priority: Critical
>             Fix For: 0.98.0, 0.95.1
>
>         Attachments: 6870-v4.txt, HBASE-6870.patch, HBASE-6870-testPerformance.patch,
HBASE-6870v2.patch, HBASE-6870v3.patch, hbase-6870v5.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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