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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-506) Incorrect UserName at Solaris because it has no "whoami" command by default
Date Wed, 29 Jul 2009 20:42:14 GMT

    [ https://issues.apache.org/jira/browse/HDFS-506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12736818#action_12736818

Tsz Wo (Nicholas), SZE commented on HDFS-506:

> So what do you think about the patch? Do you think it's better to wait for HADOOP-4487
be solved or to apply the patch to the current version?

The patch mainly changes the shell commands from whoami + groups to id and makes SunOS a special
case.  As mentioned before, it does not increase security.  So we have to wait for HADOOP-4487

The question is whether it is good to (1) replace whoami + groups with id and (2) make SunOS
a special case.  Both (1) and/or (2) are incompatible changes, i.e. it potentially breaks
some existing systems.  I think we should minimize incompatible changes in general.

Could you simply install whoami in your SunOS systems?

(BTW, you may use "svn diff > a.patch" or the corresponding comnand in git for generating

> Incorrect UserName at Solaris because it has no "whoami" command by default
> ---------------------------------------------------------------------------
>                 Key: HDFS-506
>                 URL: https://issues.apache.org/jira/browse/HDFS-506
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: build
>    Affects Versions: 0.20.1
>         Environment: OS: SunOS 5.10
>            Reporter: Urko Benito
>         Attachments: PermissionChecker.java.diff, Shell.java.diff, test-hadoop-security.tar.gz,
>   Original Estimate: 24h
>  Remaining Estimate: 24h
> Solaris enviroment has no __whoami__ command, so the __getUnixUserName()__ at UnixUserGroupInformation
class fails because it's calling to Shell.USER_NAME_COMMAND which is defines as "whoami".
> So it launched an Exception and set the default "DrWho" username ignoring all the FileSystem

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