boyuanzz commented on a change in pull request #11472:
URL: https://github.com/apache/beam/pull/11472#discussion_r413493450
##########
File path:
sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/reflect/DoFnInvoker.java
##########
@@ -94,9 +94,13 @@ void invokeOnTimer(
void invokeSplitRestriction(ArgumentProvider<InputT, OutputT> arguments);
/**
- * Invoke the {@link DoFn.GetSize} method on the bound {@link DoFn}. Falls
back to get the size
- * from the {@link RestrictionTracker} if it supports {@link Sizes.HasSize},
otherwise returns
- * 1.0.
+ * Invoke the {@link DoFn.GetSize} method on the bound {@link DoFn}. Falls
back to:
+ *
+ * <ol>
+ * <li>get the work remaining from the {@link RestrictionTracker} if it
supports {@link
+ * HasProgress}.
+ * <li>returning the constant {@link 1.0}.
Review comment:
Do we want to highlight that this fallback may impact batch autoscaling
if `HasProcess` is not implemented correctly.
##########
File path:
sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/splittabledofn/Sizes.java
##########
@@ -1,54 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.beam.sdk.transforms.splittabledofn;
-
-import org.apache.beam.sdk.annotations.Experimental;
-import org.apache.beam.sdk.annotations.Experimental.Kind;
-
-/** Definitions and convenience methods for reporting sizes for
SplittableDoFns. */
-@Experimental(Kind.SPLITTABLE_DO_FN)
-public final class Sizes {
- /**
- * {@link RestrictionTracker}s which can provide a size should implement
this interface.
- * Implementations that do not implement this interface will be assumed to
have an equivalent
- * size.
- */
- public interface HasSize {
Review comment:
I though we still want to keep this and make `HasProgress` as a fallback?
##########
File path:
sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/reflect/ByteBuddyDoFnInvokerFactory.java
##########
@@ -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:
I'm not very familiar with how this invoker works but I thought we check
whether `restrictionTracker ` has `HasSize`, if not then fallback to progress.
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