[jira] Commented: (HADOOP-4429) Misconfigured UNIX Groups Break Hadoop

["Alex Loddengaard (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-4429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12640227#action_12640227 ] 

Alex Loddengaard commented on HADOOP-4429:
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I originally stumbled on this problem when using an internal derivative of Ubuntu, with funky LDAP settings.  Running Hadoop would generate the following error:

bq. ERROR dfs.NameNode: java.io.IOException: javax.security.auth.login.LoginException: Login failed: id: cannot find name for group ID

The last portion of the error, "Login failed: id: cannot find name of group ID," would also occur when I ran the "groups" binary from a command line.

I propose using a default group in the case that getting a user's groups fails.

> 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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