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https://issues.apache.org/jira/browse/MAPREDUCE-4253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13285576#comment-13285576
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OZAWA Tsuyoshi commented on MAPREDUCE-4253:
-------------------------------------------

@Harsh, 

The reason of the error is the warning by the test codes's using 
org.apache.hadoop.hdfs.MiniDFSCluster or some deprecated methods. This is not 
the problem by my patch, but another problem that tests cases have by them 
nature.

The list of deprecated test cases is as follows:
TestDelegationToken.java
TestPipes.java
ClusterMapReduceTestCase.java
HadoopTestCase.java
TestReduceFetchFromPartialMem.java
TestBinaryTokenFile.java
TestMRAppWithCombiner.java
TestJobCleanup.java
TestJobSysDirWithDFS.java
TestNonExistentJob.java
ClusterMapReduceTestCase.java
TestMapReduceLazyOutput.java
MRCaching.java
TestMultipleLevelCaching.java
TestMROldApiJobs.java
MRBench.java
MapredTestDriver.java
TestMiniMRWithDFSWithDistinctUsers.java
TestMiniMRProxyUser.java
FileBench.java
TestDelegationToken.java
TestPipes.java
TestMapOutputType.java
HadoopTestCase.java
TestJobOutputCommitter.java
TestWrappedRRClassloader.java
SortValidator.java
UtilsForTests.java
TestMultipleOutputs.java
TestReduceFetchFromPartialMem.java
TestChild.java
TestWrappedRecordReaderClassloader.java
TestJoinDatamerge.java
TestJobSysDirWithDFS.java
DFSCIOTest.java
TestMRJobsWithHistoryService.java
MRAsyncDiskService.java
TestNonExistentJob.java
TestMiniMRBringup.java
TestFileSystem.java
TestMapReduce.java
TestMapReduceLazyOutput.java
MRCaching.java
TestMiniMRDFSCaching.java
TestMRSequenceFileAsTextInputFormat.java
TestCombineOutputCollector.java
TestMiniMRChildTask.java
GenericMRLoadGenerator.java
TestCombineFileInputFormat.java
TestDFSIO.java
RandomTextWriter.java
RandomTextWriterJob.java
TestMRJobs.java
TestMiniMRClientCluster.java
TestConcatenatedCompressedInput.java
TestMROldApiJobs.java
MiniMRClientClusterFactory.java
TestJoinProperties.java
TestSequenceFileInputFormat.java
TestDatamerge.java
UserNamePermission.java
MRBench.java
TestLazyOutput.java
MapredTestDriver.java
TestMRSequenceFileInputFilter.java
NNBench.java
TestComparators.java
TestSpecialCharactersInOutputPath.java
ReliabilityTest.java
TestSequenceFileMergeProgress.java
TestCombineFileInputFormat.java
TestURIFragments.java
TestMiniMRWithDFSWithDistinctUsers.java
TestCommandLineJobSubmission.java
TestMapRed.java
RandomWriter.java
TestMiniMRProxyUser.java
TestMRSequenceFileAsBinaryInputFormat.java
TestJobConf.java

What should we deal with this problem?
IMHO, we needs the new ticket to solve this problem.
                
> Tests for mapreduce-client-core are lying under mapreduce-client-jobclient
> --------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4253
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4253
>             Project: Hadoop Map/Reduce
>          Issue Type: Task
>          Components: client
>    Affects Versions: 2.0.0-alpha
>            Reporter: Harsh J
>         Attachments: MR-4253.1.patch, crossing_project_checker.rb, result.txt
>
>
> Many of the tests for client libs from mapreduce-client-core are lying under 
> mapreduce-client-jobclient.
> We should investigate if this is the right thing to do and if not, move the 
> tests back into client-core.

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