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