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From "Hari Sekhon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14665) Support # hash prefix comment lines in auth_to_local mapping rules
Date Fri, 10 Nov 2017 15:10:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16247614#comment-16247614

Hari Sekhon commented on HADOOP-14665:

Most of us don't hand edit that file any more in recent years as it's commonly done via Ambari
but yes I see your point since it is just an xml value field.

I don't think it would be difficult for Hadoop to simply strip hash comments out of the value
field though.

I might raise this to Ambari project as well but still think it might be better done in core
as otherwise it won't help people who are on Cloudera or MapR which don't use Ambari and it
becomes a distribution specific enhancement in each vendor's management console in that case.

> Support # hash prefix comment lines in auth_to_local mapping rules
> ------------------------------------------------------------------
>                 Key: HADOOP-14665
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14665
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 2.7.3
>         Environment: HDP 2.6.0 + Kerberos
>            Reporter: Hari Sekhon
> Request to add support for # hash prefixed comment lines in Hadoop's auth_to_local mappings
rules so I can comment what rules I've added and why inline to the rules like with code (useful
when supporting multi-directory mappings).
> It should be fairly easy to implement, just string strip all lines from # to end, trim
whitespace and then exclude all blank / whitespace lines, I do this in tools I write all the

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