[
https://issues.apache.org/jira/browse/YARN-744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13827538#comment-13827538
]
Hudson commented on YARN-744:
-----------------------------
SUCCESS: Integrated in Hadoop-Yarn-trunk #397 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk/397/])
YARN-744. Race condition in ApplicationMasterService.allocate .. It might
process same allocate request twice resulting in additional containers getting
allocated. (Omkar Vinit Joshi via bikas) (bikas:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1543707)
* /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ApplicationMasterService.java
> Race condition in ApplicationMasterService.allocate .. It might process same
> allocate request twice resulting in additional containers getting allocated.
> ---------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: YARN-744
> URL: https://issues.apache.org/jira/browse/YARN-744
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Reporter: Bikas Saha
> Assignee: Omkar Vinit Joshi
> Priority: Minor
> Attachments: MAPREDUCE-3899-branch-0.23.patch,
> YARN-744-20130711.1.patch, YARN-744-20130715.1.patch,
> YARN-744-20130726.1.patch, YARN-744.1.patch, YARN-744.2.patch, YARN-744.patch
>
>
> Looks like the lock taken in this is broken. It takes a lock on lastResponse
> object and then puts a new lastResponse object into the map. At this point a
> new thread entering this function will get a new lastResponse object and will
> be able to take its lock and enter the critical section. Presumably we want
> to limit one response per app attempt. So the lock could be taken on the
> ApplicationAttemptId key of the response map object.
--
This message was sent by Atlassian JIRA
(v6.1#6144)
