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https://issues.apache.org/jira/browse/YARN-5035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15303025#comment-15303025
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Hudson commented on YARN-5035:
------------------------------
SUCCESS: Integrated in Hadoop-trunk-Commit #9868 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/9868/])
YARN-5035. FairScheduler: Adjust maxAssign dynamically when (kasha: rev
04ded558b03ee0fbf68a611cf1f25508b4447e44)
*
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-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/FairScheduler.md
*
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
*
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FairSchedulerConfiguration.java
> FairScheduler: Adjust maxAssign dynamically when assignMultiple is turned on
> ----------------------------------------------------------------------------
>
> Key: YARN-5035
> URL: https://issues.apache.org/jira/browse/YARN-5035
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler
> Affects Versions: 2.8.0
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
> Attachments: yarn-5035-1.patch, yarn-5035-2.patch, yarn-5035-3.patch
>
>
> When assignMultiple is turned on, today the number of containers allocated to
> node within a single heartbeat is determined by maxAssign. Picking a higher
> value for this prevents the spreading of the workload, and a smaller number
> leads to slow ramp up.
> The proposal is to make it dynamic - half of the unallocated resources on the
> node.
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