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https://issues.apache.org/jira/browse/MAPREDUCE-1026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12758487#action_12758487
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Owen O'Malley commented on MAPREDUCE-1026:
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Avro RPC won't have bulk data or authentication for a while, I suspect.
But the answer is yes, once there is authentication on the rpc, we can use
that. In particular, the rpc will be able to use token/secret keys for
authentication and that would be appropriate for this context. (Clearly a key
exchange involving the kdc would never be performant enough for the shuffle.)
> 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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