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Posted to common-dev@hadoop.apache.org by "Owen O'Malley (JIRA)" <ji...@apache.org> on 2010/04/01 01:36:30 UTC

[jira] Created: (HADOOP-6670) UserGroupInformation doesn't support use in hash tables

UserGroupInformation doesn't support use in hash tables
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                 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


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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