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Posted to yarn-issues@hadoop.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2013/11/01 14:04:29 UTC
[jira] [Commented] (YARN-1290) Let continuous scheduling achieve
more balanced task assignment
[ https://issues.apache.org/jira/browse/YARN-1290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13811228#comment-13811228 ]
Hudson commented on YARN-1290:
------------------------------
FAILURE: Integrated in Hadoop-Mapreduce-trunk #1596 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1596/])
YARN-1290. Let continuous scheduling achieve more balanced task assignment (Wei Yan via Sandy Ryza) (sandy: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1537731)
* /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/scheduler/fair/FairScheduler.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/TestFairScheduler.java
> Let continuous scheduling achieve more balanced task assignment
> ---------------------------------------------------------------
>
> Key: YARN-1290
> URL: https://issues.apache.org/jira/browse/YARN-1290
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Wei Yan
> Assignee: Wei Yan
> Fix For: 2.3.0
>
> Attachments: YARN-1290.patch, YARN-1290.patch, YARN-1290.patch, YARN-1290.patch, main.pdf
>
>
> Currently, in continuous scheduling (YARN-1010), in each round, the thread iterates over pre-ordered nodes and assigns tasks. This mechanism may overload the first several nodes, while the latter nodes have no tasks.
> We should sort all nodes according to available resource. In each round, always assign tasks to nodes with larger capacity, which can balance the load distribution among all nodes.
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