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From "Trevor Robinson (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-7290) Unit test failure in TestUserGroupInformation.testGetServerSideGroups
Date Fri, 13 May 2011 20:43:47 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-7290?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Trevor Robinson updated HADOOP-7290:
------------------------------------

    Component/s:     (was: test)
                 security

> Unit test failure in TestUserGroupInformation.testGetServerSideGroups
> ---------------------------------------------------------------------
>
>                 Key: HADOOP-7290
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7290
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 0.23.0
>         Environment: Linux 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011
x86_64 x86_64 x86_64 GNU/Linux
> Java(TM) SE Runtime Environment (build 1.6.0_24-b07)
> Java HotSpot(TM) 64-Bit Server VM (build 19.1-b02, mixed mode)
>            Reporter: Trevor Robinson
>            Priority: Minor
>              Labels: test
>         Attachments: TestUserGroupInformation-id-order.patch
>
>
> Testsuite: org.apache.hadoop.security.TestUserGroupInformation
> Tests run: 14, Failures: 1, Errors: 0, Time elapsed: 0.278 sec
> ------------- Standard Output ---------------
> trobinson:users guest git
> ------------- ---------------- ---------------
> Testcase: testGetServerSideGroups took 0.051 sec
>        FAILED
> expected:<g[ues]t> but was:<g[i]t>
> junit.framework.AssertionFailedError: expected:<g[ues]t> but was:<g[i]t>
>        at org.apache.hadoop.security.TestUserGroupInformation.testGetServerSideGroups(TestUserGroupInformation.java:94)
> It seems like the test is assuming that the groups returned by UserGroupInformation.getGroupNames()
are in the same order as those returned by executing `id -Gn`. getGroupNames() only documents
that the primary group is first, and `man id` doesn't document any ordering, so it seems like
the test needs to be reworked to remove that assumption.

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