private Iterable<? extends CommittedBundle<?>> commitBundles(
Iterable<? extends UncommittedBundle<?>> bundles) {
ImmutableList.Builder<CommittedBundle<?>> completed = ImmutableList.builder();
for (UncommittedBundle<?> inProgress : bundles) {
AppliedPTransform<?, ?, ?> producing =
inProgress.getPCollection().getProducingTransformInternal();
TransformWatermarks watermarks = watermarkManager.getWatermarks(producing);
CommittedBundle<?> committed =
inProgress.commit(watermarks.getSynchronizedProcessingOutputTime());
// Empty bundles don't impact watermarks and shouldn't trigger downstream execution, so
// filter them out
if (!Iterables.isEmpty(committed.getElements())) {
completed.add(committed);
}
}
return completed.build();
}
private void fireAvailableCallbacks(AppliedPTransform<?, ?, ?> producingTransform) {
TransformWatermarks watermarks = watermarkManager.getWatermarks(producingTransform);
callbackExecutor.fireForWatermark(producingTransform, watermarks.getOutputWatermark());
}