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https://issues.apache.org/jira/browse/HBASE-5140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13183087#comment-13183087
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Hadoop QA commented on HBASE-5140:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12510006/Added_functionality_to_TableInputFormat_that_allows_splitting_of_regions.patch
against trunk revision .
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
-1 javadoc. The javadoc tool appears to have generated -151 warning
messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
-1 findbugs. The patch appears to introduce 80 new Findbugs (version
1.3.9) warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
-1 core tests. The patch failed these unit tests:
org.apache.hadoop.hbase.mapreduce.TestImportTsv
org.apache.hadoop.hbase.mapred.TestTableMapReduce
org.apache.hadoop.hbase.mapreduce.TestHFileOutputFormat
org.apache.hadoop.hbase.mapreduce.TestTableMapReduce
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/712//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/712//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/712//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_TableInputFormat_that_allows_splitting_of_regions.patch,
> 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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