| /* |
| * 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.planner.physical; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.calcite.rel.metadata.RelMetadataQuery; |
| import org.apache.drill.common.logical.PlanProperties; |
| import org.apache.drill.common.logical.PlanProperties.Generator.ResultMode; |
| import org.apache.drill.common.logical.PlanProperties.PlanPropertiesBuilder; |
| import org.apache.drill.common.logical.PlanProperties.PlanType; |
| import org.apache.drill.exec.ExecConstants; |
| import org.apache.drill.exec.ops.QueryContext; |
| import org.apache.drill.exec.physical.PhysicalPlan; |
| import org.apache.drill.exec.physical.base.PhysicalOperator; |
| import org.apache.drill.exec.planner.cost.DrillCostBase; |
| import org.apache.drill.exec.planner.cost.PrelCostEstimates; |
| import org.apache.drill.exec.planner.physical.explain.PrelSequencer.OpId; |
| |
| import com.google.common.collect.Lists; |
| |
| |
| public class PhysicalPlanCreator { |
| |
| private final Map<Prel, OpId> opIdMap; |
| private final List<PhysicalOperator> popList; |
| private final QueryContext context; |
| private PhysicalPlan plan; |
| |
| public PhysicalPlanCreator(QueryContext context, Map<Prel, OpId> opIdMap) { |
| this.context = context; |
| this.opIdMap = opIdMap; |
| popList = Lists.newArrayList(); |
| } |
| |
| public QueryContext getContext() { |
| return context; |
| } |
| |
| public PhysicalOperator addMetadata(Prel originalPrel, PhysicalOperator op){ |
| op.setOperatorId(opIdMap.get(originalPrel).getAsSingleInt()); |
| op.setCost(getPrelCostEstimates(originalPrel, op)); |
| return op; |
| } |
| |
| private PrelCostEstimates getPrelCostEstimates(Prel originalPrel, PhysicalOperator op) { |
| final RelMetadataQuery mq = originalPrel.getCluster().getMetadataQuery(); |
| final double estimatedRowCount = originalPrel.estimateRowCount(mq); |
| final DrillCostBase costBase = (DrillCostBase) originalPrel.computeSelfCost(originalPrel.getCluster().getPlanner(), |
| mq); |
| final PrelCostEstimates costEstimates; |
| if (!op.isBufferedOperator(context)) { |
| costEstimates = new PrelCostEstimates(context.getOptions().getLong(ExecConstants.OUTPUT_BATCH_SIZE), estimatedRowCount); |
| } else { |
| costEstimates = new PrelCostEstimates(costBase.getMemory(), estimatedRowCount); |
| } |
| return costEstimates; |
| } |
| |
| public PhysicalPlan build(Prel rootPrel, boolean forceRebuild) { |
| |
| if (plan != null && !forceRebuild) { |
| return plan; |
| } |
| |
| PlanPropertiesBuilder propsBuilder = PlanProperties.builder(); |
| propsBuilder.type(PlanType.APACHE_DRILL_PHYSICAL); |
| propsBuilder.version(1); |
| propsBuilder.resultMode(ResultMode.EXEC); |
| propsBuilder.generator(PhysicalPlanCreator.class.getName(), ""); |
| |
| try { |
| // invoke getPhysicalOperator on the root Prel which will recursively invoke it |
| // on the descendants and we should have a well-formed physical operator tree |
| PhysicalOperator rootPOP = rootPrel.getPhysicalOperator(this); |
| if (rootPOP != null) { |
| assert (popList.size() > 0); //getPhysicalOperator() is supposed to populate this list |
| plan = new PhysicalPlan(propsBuilder.build(), popList); |
| } |
| |
| } catch (IOException e) { |
| plan = null; |
| throw new UnsupportedOperationException("Physical plan created failed with error : " + e.toString()); |
| } |
| |
| return plan; |
| } |
| } |