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https://issues.apache.org/jira/browse/YARN-2885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15075600#comment-15075600
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Arun Suresh commented on YARN-2885:
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Thanks for the review [~leftnoteasy],
bq. Do you have real use case that distributed scheduler needs to set different
properties such as DIST_SCHEDULING_MIN_MEMORY..
We had included this so that we can centrally (via the RM) control the max/min
capability of a container that is allocatable via Distributed Scheduling..
which could be different from the Scheduler min/max.
bq. First constructor of ApplicationMasterService, should use name ..
Good catch.. will fix that
bq. You can add a isDistributedSchedulingEnabled method to YarnConfiguration..
Actually, I had thought about that.. but if you notice, we are actually
querying the configuration object only once in the serviceinit of the
{{NodeManager}} and the value is passed on to all the other required classes
via constructor etc.. So I did not find much value in adding that the
YarnConfiguration.
If you are ok with the rest of the patch and agree with the approach... I shall
clean it up a bit more with proper javadocs etc.
> Create AMRMProxy request interceptor for distributed scheduling decisions for
> queueable containers
> --------------------------------------------------------------------------------------------------
>
> Key: YARN-2885
> URL: https://issues.apache.org/jira/browse/YARN-2885
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: nodemanager, resourcemanager
> Reporter: Konstantinos Karanasos
> Assignee: Arun Suresh
> Attachments: YARN-2885-yarn-2877.001.patch,
> YARN-2885-yarn-2877.002.patch, YARN-2885-yarn-2877.full-2.patch,
> YARN-2885-yarn-2877.full-3.patch, YARN-2885-yarn-2877.full.patch,
> YARN-2885-yarn-2877.v4.patch, YARN-2885_api_changes.patch
>
>
> We propose to add a Local ResourceManager (LocalRM) to the NM in order to
> support distributed scheduling decisions.
> Architecturally we leverage the RMProxy, introduced in YARN-2884.
> The LocalRM makes distributed decisions for queuable containers requests.
> Guaranteed-start requests are still handled by the central RM.
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