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https://issues.apache.org/jira/browse/HBASE-13356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14570177#comment-14570177
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Andrew Mains commented on HBASE-13356:
--------------------------------------

No problem! Thanks for the review, and the patience with my noob formatting 
issues :)

> HBase should provide an InputFormat supporting multiple scans in mapreduce 
> jobs over snapshots
> ----------------------------------------------------------------------------------------------
>
>                 Key: HBASE-13356
>                 URL: https://issues.apache.org/jira/browse/HBASE-13356
>             Project: HBase
>          Issue Type: New Feature
>          Components: mapreduce
>            Reporter: Andrew Mains
>            Assignee: Andrew Mains
>            Priority: Minor
>             Fix For: 2.0.0, 1.2.0
>
>         Attachments: HBASE-13356-0.98.patch, HBASE-13356-branch-1.patch, 
> HBASE-13356.2.patch, HBASE-13356.3.patch, HBASE-13356.4.patch, 
> HBASE-13356.patch
>
>
> Currently, HBase supports the pushing of multiple scans to mapreduce jobs 
> over live tables (via MultiTableInputFormat) but only supports a single scan 
> for mapreduce jobs over table snapshots. It would be handy to support 
> multiple scans over snapshots as well, probably through another input format 
> (MultiTableSnapshotInputFormat?). To mimic the functionality present in 
> MultiTableInputFormat, the new input format would likely have to take in the 
> names of all snapshots used in addition to the scans.



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