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https://issues.apache.org/jira/browse/HADOOP-14202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15947810#comment-15947810
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John Zhuge commented on HADOOP-14202:
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Thanks for the clarification on Bash 3.2.
Ok to keep HADOOP_SUBCMD_SECURESERVICE. Should you put the var back to
UnixShellGuide.md?
> fix jsvc/secure user var inconsistencies
> ----------------------------------------
>
> Key: HADOOP-14202
> URL: https://issues.apache.org/jira/browse/HADOOP-14202
> Project: Hadoop Common
> Issue Type: Improvement
> Components: scripts
> Affects Versions: 3.0.0-alpha2
> Reporter: Allen Wittenauer
> Assignee: Allen Wittenauer
> Attachments: HADOOP-14202.00.patch, HADOOP-14202.01.patch,
> HADOOP-14202.02.patch
>
>
> Post-HADOOP-13341 and (more importantly) HADOOP-13673, there has been a major
> effort on making the configuration environment variables consistent among all
> the projects. The vast majority of vars now look like
> (command)_(subcommand)_(etc). Two hold outs are HADOOP_SECURE_DN_USER and
> HADOOP_PRIVILEGED_NFS_USER.
> Additionally, there is
> * no generic handling
> * no documentation for anyone
> * no safety checks to make sure things are defined
> In order to fix all of this, we should:
> * deprecate the previous vars using the deprecation function, updating the
> HDFS documentation that references them
> * add generic (command)_(subcommand)_SECURE_USER support
> * add some verification for the previously mentioned var
> * add some docs to UnixShellGuide.md
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