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From "Andrew Mains (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-13356) HBase should provide an InputFormat supporting multiple scans in mapreduce jobs over snapshots
Date Mon, 01 Jun 2015 00:28:18 GMT

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

Andrew Mains updated HBASE-13356:
---------------------------------
    Attachment: HBASE-13356-0.98.patch

Attached a patch created against 0.98.12, in response to a request by [~Shaofengshi] on the
mailing list. Hopefully the naming convention is correct; I went off of other tickets I could
find, but couldn't find definitive documentation on how to best indicate that this patch is
against an older version.

> 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-13356-0.98.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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