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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (MAPREDUCE-6458) Figure out the way to pass build-in classpath (files in distributed cache, etc.) from parent to spawned shells
Date Fri, 21 Aug 2015 01:43:46 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14706085#comment-14706085
] 

Allen Wittenauer edited comment on MAPREDUCE-6458 at 8/21/15 1:43 AM:
----------------------------------------------------------------------

Re-assigning this to me and updating the description to reflect reality, since I actually
understand how bash works.


was (Author: aw):
Re-assigning this to me, since I actually understand how bash works.

> Figure out the way to pass build-in classpath (files in distributed cache, etc.) from
parent to spawned shells
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-6458
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6458
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Junping Du
>            Assignee: Allen Wittenauer
>
> In MAPREDUCE-6454 (target for branch-2.x), we provide an extremely fragile way to pass
built-in classpath from parent to child shell, via HADOOP_CLASSPATH, so jars in distributed
cache can still work in child tasks. In trunk, we may think some way different, like: involve
additional env var to safely pass build-in classpath.



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