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Date: Thu, 30 Jul 2009 04:17:14 -0700 (PDT)
From: "Urko Benito (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Subject: [jira] Commented: (HDFS-506) Incorrect UserName at Solaris because
 it has no "whoami" command by default
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    [ https://issues.apache.org/jira/browse/HDFS-506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12737071#action_12737071 ] 

Urko Benito commented on HDFS-506:
----------------------------------

Hi


I think the solution is *not to change the source code* but, keep in mind that *this is not the correct way* (but until HADOOP-4487 is solved) i proposed a solution

* Update the _prerequisites_ at wiki page saying something like *keep in mind whoami, bash and md5sum must be present and accesible to hadoop process*
* Add some _Hadoop Solaris Installation Guide_ to the official doc

I'm writing a _Installing Hadoop on Solaris Guide_ at my blog, but at the moment is in Spanish, i'll translated it to English and add to the issue.

What do you think about?


> 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, UnixUserGroupInformation.java.diff
>
>   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 permissions.

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