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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-6670) UserGroupInformation doesn't support use in hash tables
Date Mon, 05 Apr 2010 16:30:27 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6670?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Owen O'Malley updated HADOOP-6670:
----------------------------------

    Attachment: fs-close.patch

This is the updated patch for y20. Not for inclusion.

> UserGroupInformation doesn't support use in hash tables
> -------------------------------------------------------
>
>                 Key: HADOOP-6670
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6670
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>         Attachments: fs-close.patch, fs-close.patch, fs-close.patch
>
>
> The UserGroupInformation objects are mutable, but they are used as keys in hash tables.
This leads to serious problems in the FileSystem cache and RPC connection cache. We need to
change the hashCode to be the identity hash code of the Subject and change equals to use ==
between the Subjects.

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