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Wangda Tan commented on YARN-4879: ---------------------------------- Linked this to YARN-4902, which will be a longer term fix of resource request related issues. > Proposal for a simple (delta) allocate protocol > ----------------------------------------------- > > Key: YARN-4879 > URL: https://issues.apache.org/jira/browse/YARN-4879 > Project: Hadoop YARN > Issue Type: Improvement > Components: applications, resourcemanager > Reporter: Subru Krishnan > Assignee: Subru Krishnan > Attachments: SimpleAllocateProtocolProposal-v1.pdf > > > For legacy reasons, the current allocate protocol expects expanded requests > which represent the cumulative request for any change in resource > constraints. This is not only very difficult to comprehend but makes it > impossible for the scheduler to associate container allocations to the > original requests. This problem is amplified by the fact that the expansion > is managed by the AMRMClient which makes it cumbersome for non-Java clients > as they all have to replicate the non-trivial logic. In this JIRA, we are > proposing a delta allocate protocol where the AM will need to only specify > changes in resource constraints. -- This message was sent by Atlassian JIRA (v6.3.4#6332)