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https://issues.apache.org/jira/browse/HBASE-5559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13228135#comment-13228135
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Hadoop QA commented on HBASE-5559:
----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12518122/5559_v1.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 did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac 
compiler warnings.

    -1 findbugs.  The patch appears to introduce 160 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.regionserver.TestAtomicOperation
                  org.apache.hadoop.hbase.mapreduce.TestImportTsv
                  org.apache.hadoop.hbase.mapred.TestTableMapReduce
                  org.apache.hadoop.hbase.mapreduce.TestHFileOutputFormat

Test results: 
https://builds.apache.org/job/PreCommit-HBASE-Build/1171//testReport/
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/1171//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html
Console output: 
https://builds.apache.org/job/PreCommit-HBASE-Build/1171//console

This message is automatically generated.
                
> --presplit option creates a first split with rowkey-end=0
> ---------------------------------------------------------
>
>                 Key: HBASE-5559
>                 URL: https://issues.apache.org/jira/browse/HBASE-5559
>             Project: HBase
>          Issue Type: Bug
>          Components: util
>            Reporter: Sujee Maniyam
>            Assignee: Sujee Maniyam
>            Priority: Trivial
>              Labels: benchmark
>         Attachments: 5559_v1.patch
>
>
> HBASE-4440 adds a 'presplit' option to PerformanceEvaluation utility.
> when the splits are generated, the first split has row-end-key=0 (zero).  
> Hence this split doesn't get any data.
> For example, 
> if total keyspace is 100, and splits requested are 5, 
> generated splits => [0, 20, 40, 60, 80]
> it should be => [20, 40, 60, 80, 100]

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