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https://issues.apache.org/jira/browse/HBASE-13356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14515127#comment-14515127
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Andrew Mains commented on HBASE-13356:
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Hmm looks like that same test is failing on master at the moment; I'll try to
rerun once that's fixed.
> 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
> Attachments: HBASE-13356.2.patch, HBASE-13356.3.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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