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https://issues.apache.org/jira/browse/HADOOP-8561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13407112#comment-13407112
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Robert Joseph Evans commented on HADOOP-8561:
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This would be really good for testing as well. We have seen issues with HFTP
tokens being broken only for proxy users, but were not testing it properly.
This should make that testing a lot simpler in the future. +1 for the idea.
> Introduce HADOOP_PROXY_USER for secure impersonation in child hadoop client
> processes
> -------------------------------------------------------------------------------------
>
> Key: HADOOP-8561
> URL: https://issues.apache.org/jira/browse/HADOOP-8561
> Project: Hadoop Common
> Issue Type: Improvement
> Components: security
> Reporter: Luke Lu
> Assignee: Yu Gao
>
> To solve the problem for an authenticated user to type hadoop shell commands
> in a web console, we can introduce an HADOOP_PROXY_USER environment variable
> to allow proper impersonation in the child hadoop client processes.
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