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https://issues.apache.org/jira/browse/HADOOP-10489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14002936#comment-14002936
]
Hudson commented on HADOOP-10489:
---------------------------------
SUCCESS: Integrated in Hadoop-trunk-Commit #5606 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/5606/])
HADOOP-10489. UserGroupInformation#getTokens and UserGroupInformation#addToken
can lead to ConcurrentModificationException. Contributed by Robert Kanter.
(atm: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1596020)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
*
/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
> UserGroupInformation#getTokens and UserGroupInformation#addToken can lead to
> ConcurrentModificationException
> ------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-10489
> URL: https://issues.apache.org/jira/browse/HADOOP-10489
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Jing Zhao
> Assignee: Robert Kanter
> Fix For: 2.5.0
>
> Attachments: HADOOP-10489.patch
>
>
> Currently UserGroupInformation#getTokens and UserGroupInformation#addToken
> uses UGI's monitor to protect the iteration and modification of
> Credentials#tokenMap. Per
> [discussion|https://issues.apache.org/jira/browse/HADOOP-10475?focusedCommentId=13965851&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13965851]
> in HADOOP-10475, this can still lead to ConcurrentModificationException.
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