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https://issues.apache.org/jira/browse/YARN-7672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16376364#comment-16376364
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stefanlee commented on YARN-7672:
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[~yufeigu] thanks ,My hadoop version is 2.4.0 and
*yarn.scheduler.fair.dynamic.max.assign* doesn't in my configuration file, what
i mean is that the SLS test with *8* should get more containers than the SLS
test with *2* ,so the former could complete more quickly than the latter,but i
found the difference of complete time between them is not obvious . My
understanding of the *yarn.scheduler.fair.max.assign* is that the greater the
value ,the better the schedule performance. please correct me if i am wrong.
> 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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