See: Description
| Class | Description | 
|---|---|
| DetectNewPartitionsState | 
 Metadata of the progress of  
DetectNewPartitionsDoFn from the metadata
 table. | 
| InitialPipelineState | 
 States to initialize a pipeline outputted by  
InitializeDoFn. | 
| NewPartition | 
 Represent new partition as a result of splits and merges. 
 | 
| PartitionRecord | 
 Output result of  
DetectNewPartitionsDoFn containing
 information required to stream a partition. | 
| StreamPartitionWithWatermark |