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https://issues.apache.org/jira/browse/HBASE-1829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12775987#action_12775987
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Lars George commented on HBASE-1829:
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v5 patch is on top of v4 patch, in other words v5 only has the diff after v4 is
applied. Does that make sense?
> Make use of start/stop row in TableInputFormat
> ----------------------------------------------
>
> Key: HBASE-1829
> URL: https://issues.apache.org/jira/browse/HBASE-1829
> Project: Hadoop HBase
> Issue Type: Improvement
> Components: mapred
> Affects Versions: 0.20.0
> Reporter: Lars George
> Assignee: Lars George
> Fix For: 0.20.2, 0.21.0
>
> Attachments: HBASE-1829-v2.patch, HBASE-1829-v3.patch,
> HBASE-1829-v4.patch, HBASE-1829-v5.patch, HBASE-1829.patch,
> HBaseTestingUtility.java, TestTableInputFormatScan.java
>
>
> Since we can now specify a start and stop row with the Scan that is handed to
> the TIF we can reduce the splits to the regions that contain these rows. That
> allows to test large MR jobs on a single region for example.
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