SinBex commented on code in PR #25593: URL: https://github.com/apache/flink/pull/25593#discussion_r1875962569
########## flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/operators/join/adaptive/AdaptiveJoinOperatorFactory.java: ########## @@ -0,0 +1,125 @@ +/* + * 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.flink.table.runtime.operators.join.adaptive; + +import org.apache.flink.annotation.Internal; +import org.apache.flink.api.java.tuple.Tuple2; +import org.apache.flink.configuration.ReadableConfig; +import org.apache.flink.streaming.api.operators.AbstractStreamOperatorFactory; +import org.apache.flink.streaming.api.operators.AdaptiveJoin; +import org.apache.flink.streaming.api.operators.StreamOperator; +import org.apache.flink.streaming.api.operators.StreamOperatorFactory; +import org.apache.flink.streaming.api.operators.StreamOperatorParameters; +import org.apache.flink.table.planner.loader.PlannerModule; +import org.apache.flink.util.InstantiationUtil; +import org.apache.flink.util.Preconditions; + +import java.io.IOException; + +/** + * Adaptive join factory. + * + * <p>Note: This class will hold an {@link AdaptiveJoin} and serve as a proxy class to provide an + * interface externally. Due to runtime access visibility constraints with the table-planner module, + * the {@link AdaptiveJoin} object will be serialized during the Table Planner phase and will be + * lazily deserialized before the dynamic generation of the JobGraph. + * + * @param <OUT> The output type of the operator + */ +@Internal +public class AdaptiveJoinOperatorFactory<OUT> extends AbstractStreamOperatorFactory<OUT> + implements AdaptiveJoin { + private static final long serialVersionUID = 1L; + + private final byte[] adaptiveJoinSerialized; + + private transient AdaptiveJoin adaptiveJoin; + + private StreamOperatorFactory<OUT> finalFactory; + + public AdaptiveJoinOperatorFactory(byte[] adaptiveJoinSerialized) { + this.adaptiveJoinSerialized = adaptiveJoinSerialized; + } + + @Override + public StreamOperatorFactory<?> genOperatorFactory( + ClassLoader classLoader, ReadableConfig config) { + checkAndLazyInitialize(); + this.finalFactory = + (StreamOperatorFactory<OUT>) adaptiveJoin.genOperatorFactory(classLoader, config); + return this.finalFactory; + } + + @Override + public Tuple2<Boolean, Boolean> enrichAndCheckBroadcast( + long leftInputSize, long rightInputSize, long threshold) { + checkAndLazyInitialize(); + return adaptiveJoin.enrichAndCheckBroadcast(leftInputSize, rightInputSize, threshold); + } + + private void checkAndLazyInitialize() { + if (this.adaptiveJoin == null) { + lazyInitialize(); + } + } + + @Override + public <T extends StreamOperator<OUT>> T createStreamOperator( + StreamOperatorParameters<OUT> parameters) { + Preconditions.checkNotNull( + finalFactory, + String.format( + "The OperatorFactory of task [%s] have not been initialized.", + parameters.getContainingTask())); + if (finalFactory instanceof AbstractStreamOperatorFactory) { + ((AbstractStreamOperatorFactory<OUT>) finalFactory) + .setProcessingTimeService(processingTimeService); + } + StreamOperator<OUT> operator = finalFactory.createStreamOperator(parameters); + return (T) operator; + } + + @Override + public Class<? extends StreamOperator> getStreamOperatorClass(ClassLoader classLoader) { + return finalFactory.getStreamOperatorClass(classLoader); + } + + private void lazyInitialize() { + if (!tryInitializeAdaptiveJoin(Thread.currentThread().getContextClassLoader())) { Review Comment: Mainly for IT case scenarios. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
