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https://issues.apache.org/jira/browse/MAPREDUCE-7322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17307115#comment-17307115
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Ahmed Hussein commented on MAPREDUCE-7322:
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Thanks [~Jim_Brennan]!
> revisiting TestMRIntermediateDataEncryption
> --------------------------------------------
>
> Key: MAPREDUCE-7322
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7322
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: job submission, security, test
> Reporter: Ahmed Hussein
> Assignee: Ahmed Hussein
> Priority: Major
> Labels: patch-available
> Fix For: 3.4.0, 3.1.5, 3.3.1, 2.10.2, 3.2.3
>
> Attachments: MAPREDUCE-7322.001.patch, MAPREDUCE-7322.002.patch,
> MAPREDUCE-7322.003.patch, MAPREDUCE-7322.004.patch, MAPREDUCE-7322.005.patch,
> MAPREDUCE-7322.006.patch, MAPREDUCE-7322.007.patch, MAPREDUCE-7322.008.patch,
> MAPREDUCE-7322.009.patch, MAPREDUCE-7322.branch-2.10.009.patch,
> MAPREDUCE-7322.branch-3.2.009.patch
>
>
> I was reviewing {{TestMRIntermediateDataEncryption}}. The unit test has
> actually little to do with encryption.
> I have the following conclusion:
> * Enabling/Disabling {{MRJobConfig.MR_ENCRYPTED_INTERMEDIATE_DATA}} does not
> change the behavior of the unit test.
> * There are no spill files generated by either mappers/reducers
> * Wrapping I/O streams with Crypto never happens during the execution of the
> unit test.
> Unless I misunderstand the purpose of that unit test, I suggest that it gets
> re-implemented so that it validates encryption in spilled intermediate data.
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