lukecwik commented on a change in pull request #11472:
URL: https://github.com/apache/beam/pull/11472#discussion_r413515258
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File path:
sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/reflect/ByteBuddyDoFnInvokerFactory.java
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@@ -397,12 +396,14 @@ public WatermarkEstimatorStateT getState() {
}
public static class DefaultGetSize {
- /** Uses {@link Sizes.HasSize} to produce the size. */
+ /** Uses {@link HasProgress} to produce the size. */
@SuppressWarnings("unused")
public static <InputT, OutputT> double invokeGetSize(
DoFnInvoker.ArgumentProvider<InputT, OutputT> argumentProvider) {
- if (argumentProvider.restrictionTracker() instanceof HasSize) {
- return ((HasSize) argumentProvider.restrictionTracker()).getSize();
+ if (argumentProvider.restrictionTracker() instanceof HasProgress) {
Review comment:
DoFn can provide a method annotated with `@GetSize` and the fallback is
the HasProgress on the RestrictionTracker. This is analogous to
RestrictionProvider/RProvider being able to provide the size while the
RestrictionTracker/RTracker provide progress in Python/Go.
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