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Posted to common-issues@hadoop.apache.org by "Aaron Dossett (JIRA)" <ji...@apache.org> on 2015/08/03 20:58:04 UTC

[jira] [Updated] (HADOOP-12284) UserGroupInformation doAs can throw misleading exception

     [ https://issues.apache.org/jira/browse/HADOOP-12284?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aaron Dossett updated HADOOP-12284:
-----------------------------------
    Attachment: HADOOP-12284.example

> UserGroupInformation doAs can throw misleading exception
> --------------------------------------------------------
>
>                 Key: HADOOP-12284
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12284
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Aaron Dossett
>            Assignee: Aaron Dossett
>            Priority: Trivial
>         Attachments: HADOOP-12284.example, HADOOP-12284.patch
>
>
> If doAs() catches a PrivilegedActionException it extracts the underlying cause through getCause and then rethrows an exception based on the class of the Cause.  If getCause returns null this executes, this is how it rethrown:
> else {
>         throw new UndeclaredThrowableException(cause);
>       }
> If cause == null that seems misleading. I have seen actual instances where cause is null, so this isn't just a theoretical concern.



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