PipelineOptions.DirectRunner which executes both
 Bounded and Unbounded Pipelines on the local machine.See: Description
| Interface | Description | 
|---|---|
| TransformExecutor | A  Runnablethat will execute aPTransformon some bundle of input. | 
| Class | Description | 
|---|---|
| ReferenceRunner | The "ReferenceRunner" engine implementation. | 
PipelineOptions.DirectRunner which executes both
 Bounded and Unbounded Pipelines on the local machine.
 See org.apache.beam.sdk.runners for more information about Pipeline Runners.