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https://issues.apache.org/jira/browse/HADOOP-2716?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12566304#action_12566304
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Konstantin Shvachko commented on HADOOP-2716:
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Yes, thanks Nicholas. I think it is very important that we keep different
components of Hadoop independent.
And calling login in RPC.getProxy() was making RPC dependent on the permissions.
> Balancer should require superuser privilege
> -------------------------------------------
>
> Key: HADOOP-2716
> URL: https://issues.apache.org/jira/browse/HADOOP-2716
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: 0.16.1
>
> Attachments: 2716_20080125.patch, 2716_20080202.patch,
> 2716_20080203.patch, 2716_20080206.patch
>
>
> Balancer uses NamenodeProtocol. Currently, there is no permission checking
> for NamenodeProtocol. We should require superuser privilege for running
> Balancer.
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