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https://issues.apache.org/jira/browse/HADOOP-4429?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alex Loddengaard updated HADOOP-4429:
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Attachment: drwhointardis.patch
Submitting a patch to set a default name and group if an Exception occurs when
fetching these from UNIX. The default username is "DrWho" and the default
group is "Tardis".
I am not submitting a test, because UnixUserGroupInformation#getUnixUserName()
and UnixUserGroupInformation#getUnixGroups() are static methods, which stops me
from extending UnixUserGroupInformation and overwriting these methods to throw
Exceptions. I considered creating a test by creating a binary for "whoami" and
"groups" and adding these to my PATH, but I figured this was rather cumbersome
with such a simple patch. Let me know if you disagree and I can make binaries
for these.
I decided to make DEFAULT_USERNAME and DEFAULT_GROUP private constants, just to
be sure to not pollute the public interface.
> Misconfigured UNIX Groups Break Hadoop
> --------------------------------------
>
> Key: HADOOP-4429
> URL: https://issues.apache.org/jira/browse/HADOOP-4429
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Environment: UNIX, Linux
> Reporter: Alex Loddengaard
> Priority: Minor
> Attachments: drwhointardis.patch
>
>
> If a UNIX user has misconfigured groups, either locally or through LDAP, then
> Hadoop will not be able to start.
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