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https://issues.apache.org/jira/browse/MAPREDUCE-1692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12857271#action_12857271
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Hemanth Yamijala commented on MAPREDUCE-1692:
---------------------------------------------
The testcase (introduced in HADOOP-542) is quite obscure because there is no
documentation about what it is intending to test. But trying to decipher:
There are two options used in this testcase - mapsideoutput and inputtagged.
Regarding mapsideoutput, what I could guess was it was using a streaming option
that caused map outputs to be written to a side effect file and verified that
the output from these files was as expected. In the test case, the file was set
to be a socket or a local file whose URL was passed to the 'mapsideoutput'
option in Streaming.
As Sreekanth pointed out, this option is no longer supported, and hence the
test code exercising this option is no longer needed.
inputtagged is still getting added to streaming options in StreamJob. But it
doesn't seem to be used anywhere. Can this be confirmed once again, please ? If
confirmed to be unused, I am +1 for removing the test case. We must probably
remove this option from being used in StreamJob as well, just so it doesn't
cause confusion.
If we stick to course to remove the test case, I suggest we remove the target
test-unix in Streaming's build.xml. Because with the patch, it is now identical
to the test target.
> Remove TestStreamedMerge from the streaming tests
> -------------------------------------------------
>
> Key: MAPREDUCE-1692
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1692
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: contrib/streaming
> Reporter: Sreekanth Ramakrishnan
> Priority: Minor
> Attachments: MAPREDUCE-1692-1.patch, MAPREDUCE-1692-1.patch
>
>
> Currently the {{TestStreamedMerge}} is never run as a part of the streaming
> test suite, the code paths which were exercised by the test was removed in
> HADOOP-1315, so it is better to remove the testcase from the code base.
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