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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-4914) Enhance MapReduce TableInputFormat to Support N-mappers per Region
Date Tue, 23 Apr 2013 23:37:21 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

stack updated HBASE-4914:

    Fix Version/s:     (was: 0.95.1)

Moving issue w/ no recent movement out of 0.95
> Enhance MapReduce TableInputFormat to Support N-mappers per Region
> ------------------------------------------------------------------
>                 Key: HBASE-4914
>                 URL: https://issues.apache.org/jira/browse/HBASE-4914
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Client, regionserver
>            Reporter: Nicolas Spiegelberg
> Current TableInputFormat based MR jobs create exactly one mapper per region where each
mapper sets one Scan with appropriate start/stop row keys. This change allows jobs to be run
with any number of mappers per region, so that when a mapper fails, there will be less data
to be reprocessed.

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