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https://issues.apache.org/jira/browse/YARN-8468?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16552885#comment-16552885
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Antal Bálint Steinbach commented on YARN-8468:
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Hi [~haibochen] !
I only commented "Thanks for the feedback [~wilfreds]", but I also fixed his
suggestions. I am sorry for that, please find my responses inline.
- a {{FSLeafQueue}} and {{FSParentQueue}} always have a parent doing a null
check on the parent is unneeded. The only queue that does not have a parent is
the root queue which you already have special cased. _(In some tests sub-queue
does not have a parent)_
- {{getMaximumResourceCapability}} must support resource types and not just
memory and vcores, same as YARN-7556 for this setting (_It supports Resource I
assume than it is ok with resource types_)
- {{getMaxAllowedAllocation}} from the NodeTracker support more than just
memory and vcores, needs to flow through (_It supports Resource I assume than
it is ok with resource types_)
- {{FairScheduler}}: Why change the static imports only for a part of the
config values, either change all or none (none is preferred) (_Fixed_)
- {{FairSchedulerPage}}: missing toString on the ResourceInfo (_added but I
can't see why is it necessary_)
- Testing must also use resource types not only the old configuration type
like: "memory-mb=5120, test1=4, vcores=2" _(Test added)_
- {{TestFairScheduler}} Testing must also include failure cases for sub queues
not just the root queue: setting value on root queue should throw and should
not be applied (_Fixed_)
- If this TestQueueMaxContainerAllocationValidator is a new file make sure
that you add the license etc (_license text added for the new files_)
Balint
> Limit container sizes per queue in FairScheduler
> ------------------------------------------------
>
> Key: YARN-8468
> URL: https://issues.apache.org/jira/browse/YARN-8468
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: resourcemanager
> Affects Versions: 3.1.0
> Reporter: Antal Bálint Steinbach
> Assignee: Antal Bálint Steinbach
> Priority: Critical
> Labels: patch
> Attachments: YARN-8468.000.patch, YARN-8468.001.patch,
> YARN-8468.002.patch, YARN-8468.003.patch
>
>
> When using any scheduler, you can use "yarn.scheduler.maximum-allocation-mb"
> to limit the overall size of a container. This applies globally to all
> containers and cannot be limited by queue or and is not scheduler dependent.
>
> The goal of this ticket is to allow this value to be set on a per queue basis.
>
> The use case: User has two pools, one for ad hoc jobs and one for enterprise
> apps. User wants to limit ad hoc jobs to small containers but allow
> enterprise apps to request as many resources as needed. Setting
> yarn.scheduler.maximum-allocation-mb sets a default value for maximum
> container size for all queues and setting maximum resources per queue with
> “maxContainerResources” queue config value.
>
> Suggested solution:
>
> All the infrastructure is already in the code. We need to do the following:
> * add the setting to the queue properties for all queue types (parent and
> leaf), this will cover dynamically created queues.
> * if we set it on the root we override the scheduler setting and we should
> not allow that.
> * make sure that queue resource cap can not be larger than scheduler max
> resource cap in the config.
> * implement getMaximumResourceCapability(String queueName) in the
> FairScheduler
> * implement getMaximumResourceCapability() in both FSParentQueue and
> FSLeafQueue as follows
> * expose the setting in the queue information in the RM web UI.
> * expose the setting in the metrics etc for the queue.
> * write JUnit tests.
> * update the scheduler documentation.
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