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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10489) UserGroupInformation#getTokens and UserGroupInformation#addToken can lead to ConcurrentModificationException
Date Tue, 20 May 2014 13:50:46 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14003256#comment-14003256
] 

Hudson commented on HADOOP-10489:
---------------------------------

FAILURE: Integrated in Hadoop-Yarn-trunk #562 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/562/])
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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