org.apache.flink.table.planner.plan.nodes.physical.batch.BatchPhysicalSortAggregateBase.scala Maven / Gradle / Ivy

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This module bridges Table/SQL API and runtime. It contains all resources that are required during pre-flight and runtime phase. The content of this module is work-in-progress. It will replace flink-table-planner once it is stable. See FLINK-11439 and FLIP-32 for more details.

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/*
 * 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.physical.batch

import org.apache.flink.table.functions.UserDefinedFunction
import org.apache.flink.table.planner.plan.cost.{FlinkCost, FlinkCostFactory}

import org.apache.calcite.plan.{RelOptCluster, RelOptCost, RelOptPlanner, RelTraitSet}
import org.apache.calcite.rel.RelNode
import org.apache.calcite.rel.`type`.RelDataType
import org.apache.calcite.rel.core.AggregateCall
import org.apache.calcite.rel.metadata.RelMetadataQuery

/**
 * Batch physical RelNode for sort-based aggregate operator.
 *
 * @see [[BatchPhysicalGroupAggregateBase]] for more info.
 */
abstract class BatchPhysicalSortAggregateBase(
    cluster: RelOptCluster,
    traitSet: RelTraitSet,
    inputRel: RelNode,
    outputRowType: RelDataType,
    grouping: Array[Int],
    auxGrouping: Array[Int],
    aggCallToAggFunction: Seq[(AggregateCall, UserDefinedFunction)],
    isMerge: Boolean,
    isFinal: Boolean)
  extends BatchPhysicalGroupAggregateBase(
    cluster,
    traitSet,
    inputRel,
    outputRowType,
    grouping,
    auxGrouping,
    aggCallToAggFunction,
    isMerge,
    isFinal) {

  override def computeSelfCost(planner: RelOptPlanner, mq: RelMetadataQuery): RelOptCost = {
    val inputRows = mq.getRowCount(getInput())
    if (inputRows == null) {
      return null
    }
    // sort is not done here
    val cpuCost = FlinkCost.FUNC_CPU_COST * inputRows * aggCallToAggFunction.size
    val avgRowSize: Double = mq.getAverageRowSize(this)
    val memCost = avgRowSize
    val rowCount = mq.getRowCount(this)
    val costFactory = planner.getCostFactory.asInstanceOf[FlinkCostFactory]
    costFactory.makeCost(rowCount, cpuCost, 0, 0, memCost)
  }
}