org.apache.beam.fn.harness.control

Interface BundleSplitListener

public interface BundleSplitListener

Listens to splits happening to a single bundle. See Breaking the Fusion Barrier for a discussion of the design.

Method Summary

Modifier and Type	Method and Description
void	split(java.util.List<org.apache.beam.model.fnexecution.v1.BeamFnApi.BundleApplication> primaryRoots, java.util.List<org.apache.beam.model.fnexecution.v1.BeamFnApi.DelayedBundleApplication> residualRoots) Signals that the current bundle should be split into the given set of primary and residual roots.

Method Detail

split

void split(java.util.List<org.apache.beam.model.fnexecution.v1.BeamFnApi.BundleApplication> primaryRoots,
           java.util.List<org.apache.beam.model.fnexecution.v1.BeamFnApi.DelayedBundleApplication> residualRoots)

Signals that the current bundle should be split into the given set of primary and residual roots.

Primary roots are the new decomposition of the bundle's work into transform applications that have happened or will happen as part of this bundle (modulo future splits). Residual roots are a decomposition of work that has been given away by the bundle, so the runner must delegate it for someone else to execute.