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From "Carlo Curino (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6363) Extending SLS: Synthetic Load Generator
Date Sat, 01 Apr 2017 04:23:42 GMT

    [ https://issues.apache.org/jira/browse/YARN-6363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15952005#comment-15952005
] 

Carlo Curino commented on YARN-6363:
------------------------------------

It might be possible, but the case I was making is that the original design we had, where
the default child-queue is created during the first run of the PlanFollower is not better
than creating it as soon as the PlanQueue is creating. 
In fact, I find it more tidy this way, where the queue hierarchy is complete from the get-go,
otherwise we have a temporarily (till PlanFollower runs) partial hierarchy with a leaf of
the tree being a PlanQueue. The SLS runs simply hit on this issue systematically, which is
unlikely to be triggered in normal RM operations.

I could track that change as a separate JIRA, and having YARN-6363 depend on that, but since
it is only a few lines I was fixing it as part of this.

Regardless before committing I want to test this on a live cluster to ensure normal operations
are not affected.



> Extending SLS: Synthetic Load Generator
> ---------------------------------------
>
>                 Key: YARN-6363
>                 URL: https://issues.apache.org/jira/browse/YARN-6363
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Carlo Curino
>            Assignee: Carlo Curino
>         Attachments: YARN-6363 overview.pdf, YARN-6363.v0.patch, YARN-6363.v1.patch,
YARN-6363.v2.patch, YARN-6363.v3.patch, YARN-6363.v4.patch
>
>
> This JIRA tracks the introduction of a synthetic load generator in the SLS. 



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