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https://issues.apache.org/jira/browse/YARN-7672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16376064#comment-16376064
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stefanlee commented on YARN-7672:
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[~yufeigu] [~ywskycn] could you please tell me whether or not the value of
*yarn.scheduler.fair.max.assign* can increase the containers which the
FairScheduler assigned , i set this value to *2* and run SLS in the first
round, then next round i update this value to *8* and run SLS again . After
that, i found there is no different between their assign ability. (i have
enabled *yarn.scheduler.fair.assignmultiple* and disabled
*continuous-scheduling*)
thanks.
> hadoop-sls can not simulate huge scale of YARN
> ----------------------------------------------
>
> Key: YARN-7672
> URL: https://issues.apache.org/jira/browse/YARN-7672
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: zhangshilong
> Assignee: zhangshilong
> Priority: Major
> Attachments: YARN-7672.patch
>
>
> Our YARN cluster scale to nearly 10 thousands nodes. We need to do scheduler
> pressure test.
> Using SLS,we start 2000+ threads to simulate NM and AM. But cpu.load very
> high to 100+. I thought that will affect performance evaluation of
> scheduler.
> So I thought to separate the scheduler from the simulator.
> I start a real RM. Then SLS will register nodes to RM,And submit apps to RM
> using RM RPC.
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