[jira] [Created] (YARN-9580) Fulfilled reservation information in assignment is lost when transferring in ParentQueue#assignContainers

["Tao Yang (JIRA)" <ji...@apache.org>]

Tao Yang created YARN-9580:
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             Summary: Fulfilled reservation information in assignment is lost when transferring in ParentQueue#assignContainers
                 Key: YARN-9580
                 URL: https://issues.apache.org/jira/browse/YARN-9580
             Project: Hadoop YARN
          Issue Type: Bug
          Components: capacityscheduler
            Reporter: Tao Yang
            Assignee: Tao Yang


When transferring assignment from child queue to parent queue, fulfilled reservation information including fulfilledReservation and fulfilledReservedContainer in assignment is lost.

When multi-nodes enabled, this lost can raise a problem that allocation proposal is generated but can't be accepted because there is a check for fulfilled reservation information in FiCaSchedulerApp#commonCheckContainerAllocation, this endless loop will always be there and the resource of the node can't be used anymore.

In HB-driven scheduling mode, fulfilled reservation can be allocated via another calling stack: CapacityScheduler#allocateContainersToNode -->  CapacityScheduler#allocateContainerOnSingleNode --> CapacityScheduler#allocateFromReservedContainer, in this way assignment can be generated by leaf queue and directly submitted, I think that's why we hardly find this problem before.



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