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From "Jeff Storck (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-14699) Impersonation errors with UGI after second principal relogin
Date Fri, 28 Jul 2017 22:20:00 GMT
Jeff Storck created HADOOP-14699:
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             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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