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https://issues.apache.org/jira/browse/YARN-11752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17911322#comment-17911322
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ASF GitHub Bot commented on YARN-11752:
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shameersss1 commented on PR #7277:
URL: https://github.com/apache/hadoop/pull/7277#issuecomment-2579150905
Thanks @slfan1989 for the review. @TaoYang526 Could you please take a look
as well.
> Global Scheduler : Improve the container allocation time
> --------------------------------------------------------
>
> Key: YARN-11752
> URL: https://issues.apache.org/jira/browse/YARN-11752
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Syed Shameerur Rahman
> Assignee: Syed Shameerur Rahman
> Priority: Major
> Labels: pull-request-available
>
> As part of YARN-10380, The allocation strategy for multi-mode/global
> scheduler was changed from "node" list based to "partition" based, Due to
> this change, After every two container allocation, the scheduler waits for *5
> milli seconds* by default as mentioned
> [here|[https://github.com/apache/hadoop/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacityScheduler.java#L627].]
> This significantly affects the container throughput. YARN SLS benchmark shows
> Async scheduling was *6x* better than Global scheduling in terms of container
> throughput for scheduling 1600 container with 50 nodes.
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