org.apache.beam.sdk

Interface PipelineResult

All Known Implementing Classes:

ApexRunnerResult, DataflowPipelineJob, DataflowTemplateJob, DirectRunner.DirectPipelineResult, FlinkDetachedRunnerResult, FlinkRunnerResult, GearpumpPipelineResult, SparkPipelineResult, SparkRunnerDebugger.DebugSparkPipelineResult

public interface PipelineResult

Result of Pipeline.run().

This is often a job handle to an underlying data processing engine.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	PipelineResult.State Possible job states, for both completed and ongoing jobs.

Method Summary

Modifier and Type	Method and Description
PipelineResult.State	cancel() Cancels the pipeline execution.
PipelineResult.State	getState() Retrieves the current state of the pipeline execution.
MetricResults	metrics() Returns the object to access metrics from the pipeline.
PipelineResult.State	waitUntilFinish() Waits until the pipeline finishes and returns the final status.
PipelineResult.State	waitUntilFinish(Duration duration) Waits until the pipeline finishes and returns the final status.

Method Detail

getState

PipelineResult.State getState()

Retrieves the current state of the pipeline execution.

Returns:

the PipelineResult.State representing the state of this pipeline.

cancel

PipelineResult.State cancel()
                     throws java.io.IOException

Cancels the pipeline execution.

Throws:

java.io.IOException - if there is a problem executing the cancel request.

java.lang.UnsupportedOperationException - if the runner does not support cancellation.

waitUntilFinish

PipelineResult.State waitUntilFinish(Duration duration)

Waits until the pipeline finishes and returns the final status. It times out after the given duration.

Parameters:

duration - The time to wait for the pipeline to finish. Provide a value less than 1 ms for an infinite wait.

Returns:

The final state of the pipeline or null on timeout.

Throws:

java.lang.UnsupportedOperationException - if the runner does not support waiting to finish with a timeout.

waitUntilFinish

PipelineResult.State waitUntilFinish()

Waits until the pipeline finishes and returns the final status.

Returns:

The final state of the pipeline.

Throws:

java.lang.UnsupportedOperationException - if the runner does not support waiting to finish.

metrics

@Experimental(value=METRICS)
MetricResults metrics()

Returns the object to access metrics from the pipeline.

Throws:

java.lang.UnsupportedOperationException - if the runner doesn't support retrieving metrics.