| /* |
| * 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.drill.exec.physical.config; |
| |
| import org.apache.drill.common.logical.data.NamedExpression; |
| import org.apache.drill.exec.ExecConstants; |
| import org.apache.drill.exec.ops.QueryContext; |
| import org.apache.drill.exec.physical.base.AbstractSingle; |
| import org.apache.drill.exec.physical.base.PhysicalOperator; |
| import org.apache.drill.exec.physical.base.PhysicalVisitor; |
| import org.apache.drill.exec.planner.physical.AggPrelBase; |
| import org.apache.drill.exec.proto.UserBitShared.CoreOperatorType; |
| |
| import com.fasterxml.jackson.annotation.JsonCreator; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import com.fasterxml.jackson.annotation.JsonTypeName; |
| |
| import java.util.List; |
| |
| @JsonTypeName("hash-aggregate") |
| public class HashAggregate extends AbstractSingle { |
| |
| static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(HashAggregate.class); |
| |
| private final AggPrelBase.OperatorPhase aggPhase; |
| private final List<NamedExpression> groupByExprs; |
| private final List<NamedExpression> aggrExprs; |
| |
| private final float cardinality; |
| |
| @JsonCreator |
| public HashAggregate(@JsonProperty("child") PhysicalOperator child, |
| @JsonProperty("phase") AggPrelBase.OperatorPhase aggPhase, |
| @JsonProperty("keys") List<NamedExpression> groupByExprs, |
| @JsonProperty("exprs") List<NamedExpression> aggrExprs, |
| @JsonProperty("cardinality") float cardinality) { |
| super(child); |
| this.aggPhase = aggPhase; |
| this.groupByExprs = groupByExprs; |
| this.aggrExprs = aggrExprs; |
| this.cardinality = cardinality; |
| } |
| |
| public AggPrelBase.OperatorPhase getAggPhase() { return aggPhase; } |
| |
| public List<NamedExpression> getGroupByExprs() { |
| return groupByExprs; |
| } |
| |
| public List<NamedExpression> getAggrExprs() { |
| return aggrExprs; |
| } |
| |
| public double getCardinality() { |
| return cardinality; |
| } |
| |
| @Override |
| public <T, X, E extends Throwable> T accept(PhysicalVisitor<T, X, E> physicalVisitor, X value) throws E{ |
| return physicalVisitor.visitHashAggregate(this, value); |
| } |
| |
| @Override |
| protected PhysicalOperator getNewWithChild(PhysicalOperator child) { |
| HashAggregate newHAG = new HashAggregate(child, aggPhase, groupByExprs, aggrExprs, cardinality); |
| newHAG.setMaxAllocation(getMaxAllocation()); |
| return newHAG; |
| } |
| |
| @Override |
| public int getOperatorType() { |
| return CoreOperatorType.HASH_AGGREGATE_VALUE; |
| } |
| |
| /** |
| * |
| * @param maxAllocation The max memory allocation to be set |
| */ |
| @Override |
| public void setMaxAllocation(long maxAllocation) { |
| this.maxAllocation = maxAllocation; |
| } |
| /** |
| * The Hash Aggregate operator supports spilling |
| * @return true (unless a single partition is forced) |
| * @param queryContext |
| */ |
| @Override |
| public boolean isBufferedOperator(QueryContext queryContext) { |
| // In case forced to use a single partition - do not consider this a buffered op (when memory is divided) |
| return queryContext == null || |
| 1 < (int) queryContext.getOptions().getOption(ExecConstants.HASHAGG_NUM_PARTITIONS_VALIDATOR); |
| } |
| |
| @Override |
| public String toString() { |
| return "HashAggregate[groupByExprs=" + groupByExprs |
| + ", aggrExprs=" + aggrExprs |
| + ", cardinality=" + cardinality |
| + "]"; |
| } |
| } |