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https://issues.apache.org/jira/browse/MAPREDUCE-5890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14042373#comment-14042373
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Alejandro Abdelnur commented on MAPREDUCE-5890:
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Hi [~chris.douglas],
I would prefer to keep the current MR job test because it test spills/merges on
both sides of the MR job making sure no edge cases are not covered.
The {{ShuffleHandler}} is a private class of MapReduce, if other frameworks use
it, it is at their own risk.
Regarding adding new abstractions, I’m OK if they are small and non-intrusive.
I just don’t want to send Arun chasing a goose a wild goose and when he finally
does we backtrack because the changes are too pervasive in the core of
MapReduce (this happened in MAPREDUCE-2454).
> Support for encrypting Intermediate data and spills in local filesystem
> -----------------------------------------------------------------------
>
> Key: MAPREDUCE-5890
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5890
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Components: security
> Affects Versions: 2.4.0
> Reporter: Alejandro Abdelnur
> Assignee: Arun Suresh
> Labels: encryption
> Attachments: MAPREDUCE-5890.3.patch, MAPREDUCE-5890.4.patch,
> org.apache.hadoop.mapred.TestMRIntermediateDataEncryption-output.txt,
> syslog.tar.gz
>
>
> For some sensitive data, encryption while in flight (network) is not
> sufficient, it is required that while at rest it should be encrypted.
> HADOOP-10150 & HDFS-6134 bring encryption at rest for data in filesystem
> using Hadoop FileSystem API. MapReduce intermediate data and spills should
> also be encrypted while at rest.
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