| /* |
| * 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.fragment; |
| |
| import com.google.common.collect.Lists; |
| import org.apache.drill.exec.physical.base.Exchange; |
| import org.apache.drill.exec.physical.base.GroupScan; |
| import org.apache.drill.exec.physical.base.HasAffinity; |
| import org.apache.drill.exec.physical.base.PhysicalOperator; |
| import org.apache.drill.exec.physical.base.Store; |
| import org.apache.drill.exec.planner.AbstractOpWrapperVisitor; |
| import org.apache.drill.exec.planner.fragment.Fragment.ExchangeFragmentPair; |
| import org.apache.drill.exec.proto.CoordinationProtos.DrillbitEndpoint; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * Visitor to collect stats such as cost and parallelization info of operators within a fragment. |
| * |
| * All operators have cost associated with them, but only few type of operators such as scan, |
| * store and exchanges (both sending and receiving) have parallelization info associated with them. |
| */ |
| public class StatsCollector extends AbstractOpWrapperVisitor<Void, RuntimeException> { |
| private final PlanningSet planningSet; |
| |
| public StatsCollector(final PlanningSet planningSet) { |
| this.planningSet = planningSet; |
| } |
| |
| @Override |
| public Void visitSendingExchange(Exchange exchange, Wrapper wrapper) throws RuntimeException { |
| // Handle the sending side exchange |
| Wrapper receivingFragment = planningSet.get(wrapper.getNode().getSendingExchangePair().getNode()); |
| |
| // List to contain the endpoints where the fragment that receive data to this fragment are running. |
| List<DrillbitEndpoint> receiverEndpoints; |
| if (receivingFragment.isEndpointsAssignmentDone()) { |
| receiverEndpoints = receivingFragment.getAssignedEndpoints(); |
| } else { |
| receiverEndpoints = Collections.emptyList(); |
| } |
| |
| wrapper.getStats().addParallelizationInfo(exchange.getSenderParallelizationInfo(receiverEndpoints)); |
| return visitOp(exchange, wrapper); |
| } |
| |
| @Override |
| public Void visitReceivingExchange(Exchange exchange, Wrapper wrapper) throws RuntimeException { |
| // Handle the receiving side Exchange |
| |
| final List<ExchangeFragmentPair> receivingExchangePairs = wrapper.getNode().getReceivingExchangePairs(); |
| |
| // List to contain the endpoints where the fragment that send dat to this fragment are running. |
| final List<DrillbitEndpoint> sendingEndpoints = Lists.newArrayList(); |
| |
| for(ExchangeFragmentPair pair : receivingExchangePairs) { |
| if (pair.getExchange() == exchange) { |
| //This is the child fragment which is sending data to this fragment. |
| Wrapper sendingFragment = planningSet.get(pair.getNode()); |
| if (sendingFragment.isEndpointsAssignmentDone()) { |
| sendingEndpoints.addAll(sendingFragment.getAssignedEndpoints()); |
| } |
| } |
| } |
| |
| wrapper.getStats().addParallelizationInfo(exchange.getReceiverParallelizationInfo(sendingEndpoints)); |
| // no traversal since it would cross current fragment boundary. |
| return null; |
| } |
| |
| @Override |
| public Void visitGroupScan(GroupScan groupScan, Wrapper wrapper) { |
| final Stats stats = wrapper.getStats(); |
| stats.addMaxWidth(groupScan.getMaxParallelizationWidth()); |
| stats.addMinWidth(groupScan.getMinParallelizationWidth()); |
| return super.visitGroupScan(groupScan, wrapper); |
| } |
| |
| @Override |
| public Void visitStore(Store store, Wrapper wrapper) { |
| wrapper.getStats().addMaxWidth(store.getMaxWidth()); |
| return super.visitStore(store, wrapper); |
| } |
| |
| @Override |
| public Void visitOp(PhysicalOperator op, Wrapper wrapper) { |
| final Stats stats = wrapper.getStats(); |
| if (op instanceof HasAffinity) { |
| final HasAffinity hasAffinity = (HasAffinity)op; |
| stats.addEndpointAffinities(hasAffinity.getOperatorAffinity()); |
| stats.setDistributionAffinity(hasAffinity.getDistributionAffinity()); |
| } |
| stats.addCost(op.getCost().getOutputRowCount()); |
| for (PhysicalOperator child : op) { |
| child.accept(this, wrapper); |
| } |
| return null; |
| } |
| } |