| Class | Description | 
|---|---|
| DefaultPool | A pool of machines that anyone can use, but topologies are not isolated | 
| FreePool | All of the machines that currently have nothing assigned to them | 
| IsolatedPool | A pool of machines that can be used to run isolated topologies | 
| MultitenantScheduler | |
| Node | Represents a single node in the cluster. | 
| NodePool | A pool of nodes that can be used to run topologies. | 
| NodePool.NodeAndSlotCounts | |
| NodePool.RoundRobinSlotScheduler | Place executors into slots in a round robin way, taking into account component spreading among different hosts. | 
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