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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7900) [AMRMProxy] AMRMClientRelayer for stateful FederationInterceptor
Date Fri, 16 Feb 2018 14:52:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16367416#comment-16367416
] 

Arun Suresh commented on YARN-7900:
-----------------------------------

Thanks for working on this [~botong]..
Just went thru the patch. The original {{batchedSchedulingRequests}} is of type {{Queue<Collection<SchedulingRequest>>}}
to ensure that all {{SchedulingRequests}} added in the same {{addSchedulingRequests}} call
must be sent in the same {{allocate}} call to the RM. The Placement Processor optimizes the
placement for a batch of scheduling requests at a time. The AM is meant to take advantage
of this, by ensuring that all co-related requests are sent in the same allocate call.


> [AMRMProxy] AMRMClientRelayer for stateful FederationInterceptor
> ----------------------------------------------------------------
>
>                 Key: YARN-7900
>                 URL: https://issues.apache.org/jira/browse/YARN-7900
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Botong Huang
>            Assignee: Botong Huang
>            Priority: Major
>         Attachments: YARN-7900.v1.patch, YARN-7900.v2.patch
>
>
> Inside stateful FederationInterceptor (YARN-7899), we need a component similar to AMRMClient
that remembers all pending (outstands) requests we've sent to YarnRM, auto re-register and
do full pending resend when YarnRM fails over and throws ApplicationMasterNotRegisteredException
back. This JIRA adds this component as AMRMClientRelayer.



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