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From "Trevor Robinson (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-7290) Unit test failure in TestUserGroupInformation.testGetServerSideGroups
Date Fri, 13 May 2011 19:39:47 GMT
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: test
    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

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
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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