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https://issues.apache.org/jira/browse/YARN-357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13573431#comment-13573431
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Hudson commented on YARN-357:
-----------------------------
Integrated in Hadoop-Hdfs-0.23-Build #518 (See
[https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/518/])
YARN-357. App submission should not be synchronized (daryn) (Revision
1443048)
Result = SUCCESS
daryn : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1443048
Files :
* /hadoop/common/branches/branch-0.23/hadoop-yarn-project/CHANGES.txt
*
/hadoop/common/branches/branch-0.23/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/RMAppManager.java
*
/hadoop/common/branches/branch-0.23/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestClientRMService.java
> App submission should not be synchronized
> -----------------------------------------
>
> Key: YARN-357
> URL: https://issues.apache.org/jira/browse/YARN-357
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 0.23.3, 3.0.0, 2.0.0-alpha
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Fix For: 3.0.0, 2.0.3-alpha, 0.23.7
>
> Attachments: YARN-357.branch-23.patch, YARN-357.patch,
> YARN-357.patch, YARN-357.txt
>
>
> MAPREDUCE-2953 fixed a race condition with querying of app status by making
> {{RMClientService#submitApplication}} synchronously invoke
> {{RMAppManager#submitApplication}}. However, the {{synchronized}} keyword was
> also added to {{RMAppManager#submitApplication}} with the comment:
> bq. I made the submitApplication synchronized to keep it consistent with the
> other routines in RMAppManager although I do not believe it needs it since
> the rmapp datastructure is already a concurrentMap and I don't see anything
> else that would be an issue.
> It's been observed that app submission latency is being unnecessarily
> impacted.
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