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Posted to issues@hbase.apache.org by "Lars Hofhansl (JIRA)" <ji...@apache.org> on 2013/02/02 02:49:13 UTC
[jira] [Comment Edited] (HBASE-3996) Support multiple tables and
scanners as input to the mapper in map/reduce jobs
[ https://issues.apache.org/jira/browse/HBASE-3996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13569365#comment-13569365 ]
Lars Hofhansl edited comment on HBASE-3996 at 2/2/13 1:47 AM:
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[~saint.ack@gmail.com], you're on board with that?
was (Author: lhofhansl):
[~saint.ack@gmail.com], you're board with that?
> Support multiple tables and scanners as input to the mapper in map/reduce jobs
> ------------------------------------------------------------------------------
>
> Key: HBASE-3996
> URL: https://issues.apache.org/jira/browse/HBASE-3996
> Project: HBase
> Issue Type: Improvement
> Components: mapreduce
> Reporter: Eran Kutner
> Assignee: Bryan Baugher
> Priority: Critical
> Fix For: 0.96.0, 0.94.5
>
> Attachments: 3996-v10.txt, 3996-v11.txt, 3996-v12.txt, 3996-v13.txt, 3996-v14.txt, 3996-v2.txt, 3996-v3.txt, 3996-v4.txt, 3996-v5.txt, 3996-v6.txt, 3996-v7.txt, 3996-v8.txt, 3996-v9.txt, HBase-3996.patch
>
>
> It seems that in many cases feeding data from multiple tables or multiple scanners on a single table can save a lot of time when running map/reduce jobs.
> I propose a new MultiTableInputFormat class that would allow doing this.
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