Bursting hosted cluster creation on a management cluster with size tagging enabled results in some hosted clusters taking a very long time to be scheduled.

    4.16.0

    always

    1. Setup a management cluster with request serving architecture and size tagging enabled.
    2. Configure clustersizing configuration for concurrency of 5 clusters at a time over a 10 minute window.
    3. Create many clusters at the same time
    

    Some of the created clusters take a very long time to be scheduled.

    New clusters take at most the time required to bring up request serving nodes to be scheduled. 

    The concurrency settings of the clustersizing configuration are getting applied to both existing clusters and new clusters coming in. They should not be applied to net new hostedclusters.