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https://issues.apache.org/jira/browse/HADOOP-10581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13993112#comment-13993112
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Hudson commented on HADOOP-10581:
---------------------------------
SUCCESS: Integrated in Hadoop-trunk-Commit #5598 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/5598/])
Correcting the check-in mistake for HADOOP-10581. (kihwal:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1593360)
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/UserGroupInformation.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/TestUserGroupInformation.java
HADOOP-10581. TestUserGroupInformation#testGetServerSideGroups fails.
Contributed by Mit Desai. (kihwal:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1593357)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/TestUserGroupInformation.java
> 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
> Fix For: 2.5.0
>
> Attachments: HADOOP-10581.patch, HADOOP-10581.patch,
> HADOOP-10581.patch
>
>
> 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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