[jira] Updated: (HADOOP-6299) Use JAAS LoginContext for our login

["Jakob Homan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-6299?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jakob Homan updated HADOOP-6299:
--------------------------------

    Attachment: UserGroupInformation.java

Attaching updated example that works with Windows/cygwin authorization.  It turns out that Java only includes the login module for the current operating system, so we need to explictily specify either the UnixLoginModule or the NTLoginModule.  After this change, the code works for either operating system.

Also changed the the kerberos login module authentication to optional.  It may be that the user doesn't have Kerberos running, but should still be able to be authenticated.

> Use JAAS LoginContext for our login
> -----------------------------------
>
>                 Key: HADOOP-6299
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6299
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Arun C Murthy
>            Assignee: Owen O'Malley
>             Fix For: 0.22.0
>
>         Attachments: UserGroupInformation.java, UserGroupInformation.java
>
>
> Currently we use a custom login module in UnixUserGroupInformation for acquiring user-credentials (via config or exec'ing 'whoami'). We should switch to using standard JAAS components such as LoginContext and possibly implement a custom UnixLoginContext for our current requirements. In future we can use this for Kerberos etc. 

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