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https://issues.apache.org/jira/browse/MAPREDUCE-1026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12758485#action_12758485
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Allen Wittenauer commented on MAPREDUCE-1026:
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> 10 characters from [a-zA-Z0-9]
This seems like a fairly small key space that one could Hadoop on a small
cluster to break. :) Why not just use MD5 or SHA1 128 or 256 bit keys?
> Shuffle should be secure
> ------------------------
>
> Key: MAPREDUCE-1026
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1026
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: security
> Reporter: Owen O'Malley
> Assignee: Devaraj Das
>
> Since the user's data is available via http from the TaskTrackers, we should
> require a job-specific secret to access it.
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