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https://issues.apache.org/jira/browse/HBASE-5140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13182930#comment-13182930
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Hadoop QA commented on HBASE-5140:
----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12509974/Added_functionality_to_split_n_times_per_region_on_mapreduce_jobs.patch
against trunk revision .
+1 @author. The patch does not contain any @author tags.
-1 tests included. The patch doesn't appear to include any new or modified
tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
-1 patch. The patch command could not apply the patch.
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/711//console
This message is automatically generated.
> TableInputFormat subclass to allow N number of splits per region during MR
> jobs
> -------------------------------------------------------------------------------
>
> Key: HBASE-5140
> URL: https://issues.apache.org/jira/browse/HBASE-5140
> Project: HBase
> Issue Type: New Feature
> Components: mapreduce
> Affects Versions: 0.90.4
> Reporter: Josh Wymer
> Priority: Trivial
> Labels: mapreduce, split
> Fix For: 0.90.4
>
> Attachments:
> Added_functionality_to_split_n_times_per_region_on_mapreduce_jobs.patch
>
> Original Estimate: 72h
> Remaining Estimate: 72h
>
> In regards to [HBASE-5138|https://issues.apache.org/jira/browse/HBASE-5138] I
> am working on a subclass for the TableInputFormat class that overrides
> getSplits in order to generate N number of splits per regions and/or N number
> of splits per job. The idea is to convert the startKey and endKey for each
> region from byte[] to BigDecimal, take the difference, divide by N, convert
> back to byte[] and generate splits on the resulting values. Assuming your
> keys are fully distributed this should generate splits at nearly the same
> number of rows per split. Any suggestions on this issue are welcome.
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