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Posted to common-issues@hadoop.apache.org by "Sergey Shelukhin (JIRA)" <ji...@apache.org> on 2016/05/09 20:06:13 UTC

[jira] [Commented] (HADOOP-13066) UserGroupInformation.loginWithKerberos/getLoginUser is not thread-safe

    [ https://issues.apache.org/jira/browse/HADOOP-13066?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15276928#comment-15276928 ] 

Sergey Shelukhin commented on HADOOP-13066:
-------------------------------------------

Thanks for the pointer, that method solves the problem. Interestingly, it sets keytabFile and keytabPrincipal statics, but not loginUser.

> UserGroupInformation.loginWithKerberos/getLoginUser is not thread-safe
> ----------------------------------------------------------------------
>
>                 Key: HADOOP-13066
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13066
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>            Reporter: Sergey Shelukhin
>
> When calling loginFromKerberos, a static variable is set up with the result. If someone logs in as a different user from a different thread, the call to getLoginUser will not return the correct UGI.



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