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List:       hadoop-dev
Subject:    [jira] [Created] (HADOOP-14699) Impersonation errors with UGI after second principal relogin
From:       "Jeff Storck (JIRA)" <jira () apache ! org>
Date:       2017-07-28 22:20:00
Message-ID: JIRA.13090911.1501280343000.41816.1501280400110 () Atlassian ! JIRA
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Jeff Storck created HADOOP-14699:
------------------------------------

             Summary: Impersonation errors with UGI after second principal relogin
                 Key: HADOOP-14699
                 URL: https://issues.apache.org/jira/browse/HADOOP-14699
             Project: Hadoop Common
          Issue Type: Bug
          Components: common
    Affects Versions: 2.8.1, 2.7.3, 2.6.2
            Reporter: Jeff Storck


Multiple principals that are logged in using UGI instances that are instantiated from \
a UGI class loaded by the same classloader will encounter problems when the second \
principal attempts to relogin.  An impersonation will occur and the operation \
attempted by the second principal after relogging in will fail.

I have created  a GitHub project that exhibits the impersonation error with brief \
instructions on how to set up for the test and run it: \
https://github.com/jtstorck/kerberos-examples/tree/master/hadoop/ugi-test




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