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From "Jeff Storck (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-14699) Impersonation errors with UGI after second principal relogin
Date Fri, 28 Jul 2017 22:46:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-14699?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jeff Storck updated HADOOP-14699:
---------------------------------
    Description: 
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 and perform an action using a UGI.doAs().  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



  was:
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 and perform an action using a UGI.doAs().  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



> 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: 2.6.2, 2.7.3, 2.8.1
>            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 and perform an action using a UGI.doAs().  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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