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https://issues.apache.org/jira/browse/YARN-5646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15730332#comment-15730332
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Konstantinos Karanasos commented on YARN-5646:
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Thanks for the detailed feedback, [~templedf]!
I also got some offline feedback from [~curino] yesterday.
I will incorporate your changes and upload a new version.
Regarding the min queue length and wait time, I will improve the description --
it is indeed not easy to understand what it does in its current form. These
parameters are used to "not dequeue containers for load rebalancing purposes,
if queue length is smaller than X tasks (or seconds)". So if you have shorter
queues than that, you simply don't perform any action.
As per Carlo's suggestion too, I will raise a JIRA to simplify some of the
properties related to opportunistic containers, including the incremental one.
For instance, I don't think there will be many cases where we will want the
min/max opportunistic container size to be different from the guaranteed one.
> Documentation for scheduling of OPPORTUNISTIC containers
> --------------------------------------------------------
>
> Key: YARN-5646
> URL: https://issues.apache.org/jira/browse/YARN-5646
> Project: Hadoop YARN
> Issue Type: Task
> Reporter: Konstantinos Karanasos
> Assignee: Konstantinos Karanasos
> Priority: Blocker
> Attachments: YARN-5646.001.patch
>
>
> This is for adding documentation regarding the scheduling of OPPORTUNISTIC
> containers.
> It includes both the centralized (YARN-5220) and the distributed (YARN-2877)
> scheduling.
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