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https://issues.apache.org/jira/browse/HADOOP-13673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15822113#comment-15822113
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Ravi Prakash commented on HADOOP-13673:
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Hi Allen!
Thanks for the patch! It looks good. I only could find these nits:
# "Atempting" -> "Attempting"
# Remove "${EUID} comes from the shell itself!" in hadoop-functions.sh
# I'm not exactly sure how HADOOP_REEXECED_CMD is being used to prevent a fork
bomb, but could a script set it to false explicitly as part of itself? i.e.
what's preventing access to that variable from a user script?
#pwd
# Is hadoop_abs supposed to resolve links? If yes, in hadoop_abs.bats could you
please add a test for links?
> Update scripts to be smarter when running with privilege
> --------------------------------------------------------
>
> Key: HADOOP-13673
> URL: https://issues.apache.org/jira/browse/HADOOP-13673
> Project: Hadoop Common
> Issue Type: New Feature
> Components: scripts
> Affects Versions: 3.0.0-alpha1, 3.0.0-alpha2
> Reporter: Allen Wittenauer
> Assignee: Allen Wittenauer
> Labels: security
> Attachments: HADOOP-13673.00.patch, HADOOP-13673.01.patch,
> HADOOP-13673.02.patch, HADOOP-13673.03.patch
>
>
> As work continues on HADOOP-13397, it's become evident that we need better
> hooks to start daemons as specifically configured users. Via the
> (command)_(subcommand)_USER environment variables in 3.x, we actually have a
> standardized way to do that. This in turn means we can make the sbin scripts
> super functional with a bit of updating:
> * Consolidate start-dfs.sh and start-secure-dns.sh into one script
> * Make start-\*.sh and stop-\*.sh know how to switch users when run as root
> * Undeprecate start/stop-all.sh so that it could be used as root for
> production purposes and as a single user for non-production users
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