fsk119 commented on code in PR #26630: URL: https://github.com/apache/flink/pull/26630#discussion_r2128003112
########## flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/plan/nodes/exec/stream/StreamExecMLPredictTableFunction.java: ########## @@ -0,0 +1,340 @@ +/* + * 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.planner.plan.nodes.exec.stream; + +import org.apache.flink.FlinkVersion; +import org.apache.flink.api.common.functions.FlatMapFunction; +import org.apache.flink.api.dag.Transformation; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.configuration.ReadableConfig; +import org.apache.flink.runtime.state.KeyGroupRangeAssignment; +import org.apache.flink.streaming.api.datastream.AsyncDataStream; +import org.apache.flink.streaming.api.functions.async.AsyncFunction; +import org.apache.flink.streaming.api.operators.ProcessOperator; +import org.apache.flink.streaming.api.operators.SimpleOperatorFactory; +import org.apache.flink.streaming.api.operators.async.AsyncWaitOperatorFactory; +import org.apache.flink.streaming.api.transformations.OneInputTransformation; +import org.apache.flink.streaming.api.transformations.PartitionTransformation; +import org.apache.flink.streaming.runtime.partitioner.KeyGroupStreamPartitioner; +import org.apache.flink.table.api.TableException; +import org.apache.flink.table.catalog.DataTypeFactory; +import org.apache.flink.table.data.RowData; +import org.apache.flink.table.data.conversion.DataStructureConverter; +import org.apache.flink.table.data.conversion.DataStructureConverters; +import org.apache.flink.table.functions.AsyncPredictFunction; +import org.apache.flink.table.functions.PredictFunction; +import org.apache.flink.table.functions.UserDefinedFunction; +import org.apache.flink.table.ml.AsyncPredictRuntimeProvider; +import org.apache.flink.table.ml.ModelProvider; +import org.apache.flink.table.ml.PredictRuntimeProvider; +import org.apache.flink.table.planner.calcite.FlinkContext; +import org.apache.flink.table.planner.codegen.CodeGeneratorContext; +import org.apache.flink.table.planner.codegen.FilterCodeGenerator; +import org.apache.flink.table.planner.codegen.LookupJoinCodeGenerator; +import org.apache.flink.table.planner.delegation.PlannerBase; +import org.apache.flink.table.planner.plan.nodes.exec.ExecNode; +import org.apache.flink.table.planner.plan.nodes.exec.ExecNodeBase; +import org.apache.flink.table.planner.plan.nodes.exec.ExecNodeConfig; +import org.apache.flink.table.planner.plan.nodes.exec.ExecNodeContext; +import org.apache.flink.table.planner.plan.nodes.exec.ExecNodeMetadata; +import org.apache.flink.table.planner.plan.nodes.exec.InputProperty; +import org.apache.flink.table.planner.plan.nodes.exec.MultipleTransformationTranslator; +import org.apache.flink.table.planner.plan.nodes.exec.spec.MLPredictSpec; +import org.apache.flink.table.planner.plan.nodes.exec.spec.ModelSpec; +import org.apache.flink.table.planner.plan.nodes.exec.utils.ExecNodeUtil; +import org.apache.flink.table.planner.plan.utils.KeySelectorUtil; +import org.apache.flink.table.planner.plan.utils.LookupJoinUtil; +import org.apache.flink.table.planner.utils.JavaScalaConversionUtil; +import org.apache.flink.table.runtime.collector.ListenableCollector; +import org.apache.flink.table.runtime.collector.TableFunctionResultFuture; +import org.apache.flink.table.runtime.functions.ModelPredictRuntimeProviderContext; +import org.apache.flink.table.runtime.generated.GeneratedCollector; +import org.apache.flink.table.runtime.generated.GeneratedFunction; +import org.apache.flink.table.runtime.generated.GeneratedResultFuture; +import org.apache.flink.table.runtime.keyselector.RowDataKeySelector; +import org.apache.flink.table.runtime.operators.join.lookup.AsyncLookupJoinRunner; +import org.apache.flink.table.runtime.operators.join.lookup.LookupJoinRunner; +import org.apache.flink.table.runtime.typeutils.InternalSerializers; +import org.apache.flink.table.runtime.typeutils.InternalTypeInfo; +import org.apache.flink.table.types.logical.RowType; + +import javax.annotation.Nullable; + +import java.util.Arrays; +import java.util.Collections; +import java.util.Optional; +import java.util.stream.IntStream; + +/** Stream {@link ExecNode} for {@code ML_PREDICT}. */ +@ExecNodeMetadata( + name = "stream-exec-ml-predict-table-function", + version = 1, + producedTransformations = StreamExecMLPredictTableFunction.ML_PREDICT_TRANSFORMATION, + minPlanVersion = FlinkVersion.V2_1, + minStateVersion = FlinkVersion.V2_1) +public class StreamExecMLPredictTableFunction extends ExecNodeBase<RowData> + implements MultipleTransformationTranslator<RowData>, StreamExecNode<RowData> { + + public static final String PARTITIONER_TRANSFORMATION = "partitioner"; + + public static final String ML_PREDICT_TRANSFORMATION = "ml-predict-table-function"; + + private final MLPredictSpec mlPredictSpec; + private final ModelSpec modelSpec; + private final @Nullable LookupJoinUtil.AsyncLookupOptions asyncLookupOptions; + private final @Nullable int[] inputUpsertKeys; Review Comment: I move this work into another ticket. 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