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Posted to issues@hbase.apache.org by "Andrew Mains (JIRA)" <ji...@apache.org> on 2015/04/26 03:17:38 UTC

[jira] [Updated] (HBASE-13356) HBase should provide an InputFormat supporting multiple scans in mapreduce jobs over snapshots

     [ https://issues.apache.org/jira/browse/HBASE-13356?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Mains updated HBASE-13356:
---------------------------------
    Assignee: Andrew Mains
      Status: Patch Available  (was: Open)

Attached patch contains mapred and mapreduce implementations of MultiTableSnapshotInputFormat, with tests.

> 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.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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