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From "Alex Loddengaard (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4429) Misconfigured UNIX Groups Break Hadoop
Date Fri, 17 Oct 2008 23:04:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12640693#action_12640693

Alex Loddengaard commented on HADOOP-4429:

One problem with doing diagnostics for configuration failures and errors in the underlying
OS/JRE is that they are hard to reliably translate. If you look for strings, your code breaks
on every OS/JRE update. If you take a guess, you end up with those windows programs that assume
that all failures are due to being out of memory, because that was a common fault. but if
it isnt the fault, it is even more misleading. 

You bring up a great point, Steve.  For this reason I'm convinced that perhaps creating a
better error message isn't the best solution.

What we can do is what you have done: place the stack trace on a bugrep where it is searchable.
The next time someone gets this error and searches for it. they will find this page. So we
should add the instructions on what to do to make the error message go away.

In my case, I was working at a large corporation, and my IT department was unable to resolve
the problem.  I had to drop the internal Ubuntu derivative, along with LDAP, certain tools,
etc, and switch to pure Ubuntu.  My solution was rather cumbersome, but I my efforts to Google
for solutions to my problem only led to dead ends and frustration.  I even sent an email to
the users list with no luck.

+1 to DrWho:Tardis :)

> 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
> If a UNIX user has misconfigured groups, either locally or through LDAP, then Hadoop
will not be able to start.

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