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https://issues.apache.org/jira/browse/MAPREDUCE-4306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13294134#comment-13294134
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Ahmed Radwan commented on MAPREDUCE-4306:
-----------------------------------------
Thanks Tom for the review!
I have updated the patch to handle the case you highlighted (when the current
user cannot be found and it is also not specified on the command line).
For the case of empty or null user, this will still be invalid, since the user
name (picked from ContainerLaunchContext#setUser) is used by
DefaultContainerExecutor.launchContainer(..) to construct the container
directory. Basically the FileNotFoundException that was preventing the
application from running was originating from line 126: lfs.mkdir(containerDir,
null, false) because the parent directory was not correct, as it was using the
wrong user in constructing the path.
> Problem running Distributed Shell applications as a user other than the one
> started the daemons
> -----------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4306
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4306
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 2.0.0-alpha
> Reporter: Ahmed Radwan
> Assignee: Ahmed Radwan
> Fix For: 2.0.1-alpha
>
> Attachments: MAPREDUCE-4306.patch
>
>
> Using the tarball, if you start the yarn daemons using one user and then
> switch to a different user. You can successfully run MR jobs, but DS jobs
> fail to run. Only able to run DS jobs using the user who started the daemons.
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