[jira] [Commented] (HBASE-11137) Add mapred.TableSnapshotInputFormat

["Nick Dimiduk (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-11137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13994039#comment-13994039 ] 

Nick Dimiduk commented on HBASE-11137:
--------------------------------------

Attaching patch for trunk. Will post on RB once it's back up. Starting on a backport for 0.98. [~stack]: you want this for 0.96 as well?

This patch extracts implementation into TableSnapshotInputFormatBase. {{mapred}} and {{mapreduce}} implementations delegate functions to that implementation. Test is similarly structured. One big difference I noticed is that {{mapred}} does not support providing a {{Scan}} for limiting the data processed by mappers. For this reason, {{mapred.TestTableSnapshotInputFormat}} tests deviate slightly from the base. That functionality should be added in a followup ticket.

ping [~enis], [~lhofhansl], [~stack], [~apurtell].

> Add mapred.TableSnapshotInputFormat
> -----------------------------------
>
>                 Key: HBASE-11137
>                 URL: https://issues.apache.org/jira/browse/HBASE-11137
>             Project: HBase
>          Issue Type: Improvement
>          Components: mapreduce, Performance
>    Affects Versions: 0.98.0, 0.96.2
>            Reporter: Nick Dimiduk
>            Assignee: Nick Dimiduk
>         Attachments: HBASE-11137.00.patch
>
>
> We should have feature parity between mapreduce and mapred implementations. This is important for Hive.



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