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From "Mit Desai (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-10581) TestUserGroupInformation#testGetServerSideGroups fails because groups stored in Set and ArrayList are compared
Date Tue, 06 May 2014 20:58:16 GMT
Mit Desai created HADOOP-10581:
----------------------------------

             Summary: TestUserGroupInformation#testGetServerSideGroups fails because groups
stored in Set and ArrayList are compared
                 Key: HADOOP-10581
                 URL: https://issues.apache.org/jira/browse/HADOOP-10581
             Project: Hadoop Common
          Issue Type: Bug
    Affects Versions: 3.0.0, 2.4.1
            Reporter: Mit Desai
            Assignee: Mit Desai


The test fails on some machines that has variety of user groups.
Initially the groups are extracted and stored in a set
{{Set<String> groups = new LinkedHashSet<String> ();}}
when the user groups are collected by calling the {{login.getGroupNames()}}, they are stored
in an array list
{{String[] gi = login.getGroupNames();}}
Because these groups are stored in different structure, there will be inconsistency in the
group count. Sets have unique list of keys while array list emits everything they have.
{{assertEquals(groups.size(), gi.length);}} fails when there are more than one groups with
same name as the count in sets will be less than the arraylist.



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