| Class | Description | 
|---|---|
| VertexStateUpdate | 
 Updates that are sent to user code running within the AM, on Vertex state changes. 
 | 
| VertexStateUpdateParallelismUpdated | 
 An event that is sent out when the parallelism of a vertex changes. 
 | 
| Enum | Description | 
|---|---|
| VertexState | 
 Vertex state information. 
 | 
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