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https://issues.apache.org/jira/browse/HADOOP-6590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12840380#action_12840380
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Andrew Ryan commented on HADOOP-6590:
-------------------------------------
I was one of the reviewers for the internal patch that went out here at FB, and
its working well for us.
I don't have any access to Solaris or Windows systems, or how the bash script
stuff is handled on those systems, so I don't know if this would pass muster on
them.
But the overall idea is definitely a good one.
> Add a username check in hadoop-daemon.sh
> ----------------------------------------
>
> Key: HADOOP-6590
> URL: https://issues.apache.org/jira/browse/HADOOP-6590
> Project: Hadoop Common
> Issue Type: Improvement
> Components: scripts
> Affects Versions: 0.22.0
> Reporter: Scott Chen
> Assignee: Scott Chen
> Priority: Minor
> Fix For: 0.22.0
>
> Attachments: HADOOP-6590.patch
>
>
> We experienced a case that sometimes we accidentally started HDFS or
> MAPREDUCE with root user. Then the directory permission will be modified and
> we have to chown them. It will be nice if there can be a username checking in
> the hadoop-daemon.sh script so that we always start with the desired username.
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