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https://issues.apache.org/jira/browse/MAPREDUCE-6191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14242068#comment-14242068
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sam liu commented on MAPREDUCE-6191:
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[A] Reason of failure:
Before executing the UT, there is already a file under the INPUT_DIR used as
the MR input dir, such as
'hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/target/test-dir/input/0'.
So the MR result is incorrect, as the input dir includes extra file.
[B] Solution:
Update UT code to remove the whole INPUT_DIR before execution, not only
removing INPUT_FILE. (I did such tests and they all passed)
> TestJavaSerialization fails with getting incorrect MR job result
> ----------------------------------------------------------------
>
> Key: MAPREDUCE-6191
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6191
> Project: Hadoop Map/Reduce
> Issue Type: Test
> Components: test
> Affects Versions: 2.6.0
> Reporter: sam liu
> Assignee: sam liu
> Priority: Minor
>
> TestJavaSerialization#testMapReduceJob() fails with getting incorrect MR job
> result:
> "junit.framework.ComparisonFailure: expected:<[a ]1> but was:<[0 1]1>"
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