hadoop-common-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ivan Mitic (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-6527) UserGroupInformation::createUserForTesting clobbers already defined group mappings
Date Tue, 03 Jul 2012 21:00:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13406043#comment-13406043

Ivan Mitic commented on HADOOP-6527:

Just to add, I still think it would be useful to remove comments from TestQueueManager.java
that refer to this Jira, as this is no longer needed. 
> UserGroupInformation::createUserForTesting clobbers already defined group mappings
> ----------------------------------------------------------------------------------
>                 Key: HADOOP-6527
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6527
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>            Reporter: Jakob Homan
>            Assignee: Ivan Mitic
>         Attachments: HADOOP-6527-branch-1-win_UGI_fix(2).patch, HADOOP-6527-branch-1-win_UGI_fix.patch
> In UserGroupInformation::createUserForTesting the follow code creates a new groups instance,
obliterating any groups that have been previously defined in the static groups field.
> {code}    if (!(groups instanceof TestingGroups)) {
>       groups = new TestingGroups();
>     }
> {code}
> This becomes a problem in tests that start a Mini{DFS,MR}Cluster and then create a testing
user.  The user that started the user (generally the real user running the test) immediately
has their groups wiped out and is prevented from accessing files/folders/queues they should
be able to.  Before the UserGroupInformation.createRemoteUserForTesting, calls to userA.getGroups
may return {"a", "b", "c"} and immediately after the new fake user is created, the same call
will return an empty array.

This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira


View raw message