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https://issues.apache.org/jira/browse/HBASE-3996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13240133#comment-13240133
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Zhihong Yu commented on HBASE-3996:
-----------------------------------
@Eran:
If there is nothing in principal (from review comments) you disagree with, I
and Stack can help with refining the latest patch.
For introducing version, see HLogKey.readFields() where there is ample document
on how the strategy was developed.
> 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: Eran Kutner
> Fix For: 0.96.0
>
> Attachments: 3996-v2.txt, 3996-v3.txt, 3996-v4.txt, 3996-v5.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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