Hierarchical Queue Characteristics
You must consider the various characteristics of the Capacity Scheduler hierarchical queues before setting them up.
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There are two types of queues: parent queues and leaf queues.
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Parent queues enable the management of resources across organizations and sub- organizations. They can contain more parent queues or leaf queues. They do not themselves accept any application submissions directly.
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Leaf queues are the queues that live under a parent queue and accept applications. Leaf queues do not have any child queues, and therefore do not have any configuration property that ends with ".queues".
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There is a top-level parent root queue that does not belong to any organization, but instead represents the cluster itself.
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Using parent and leaf queues, administrators can specify capacity allocations for various organizations and sub-organizations.