| /* |
| * 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.hyracks.algebricks.core.algebra.operators.physical; |
| |
| import java.util.ArrayList; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.commons.lang3.mutable.Mutable; |
| import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import org.apache.hyracks.algebricks.common.utils.ListSet; |
| import org.apache.hyracks.algebricks.common.utils.Pair; |
| import org.apache.hyracks.algebricks.core.algebra.base.IHyracksJobBuilder; |
| import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression; |
| import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator; |
| import org.apache.hyracks.algebricks.core.algebra.base.ILogicalPlan; |
| import org.apache.hyracks.algebricks.core.algebra.base.IOptimizationContext; |
| import org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable; |
| import org.apache.hyracks.algebricks.core.algebra.base.PhysicalOperatorTag; |
| import org.apache.hyracks.algebricks.core.algebra.expressions.AggregateFunctionCallExpression; |
| import org.apache.hyracks.algebricks.core.algebra.expressions.IExpressionRuntimeProvider; |
| import org.apache.hyracks.algebricks.core.algebra.expressions.IPartialAggregationTypeComputer; |
| import org.apache.hyracks.algebricks.core.algebra.expressions.IVariableTypeEnvironment; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator.ExecutionMode; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.AggregateOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.GroupByOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.IOperatorSchema; |
| import org.apache.hyracks.algebricks.core.algebra.properties.ILocalStructuralProperty; |
| import org.apache.hyracks.algebricks.core.algebra.properties.IPartitioningRequirementsCoordinator; |
| import org.apache.hyracks.algebricks.core.algebra.properties.IPhysicalPropertiesVector; |
| import org.apache.hyracks.algebricks.core.algebra.properties.LocalGroupingProperty; |
| import org.apache.hyracks.algebricks.core.algebra.properties.PhysicalRequirements; |
| import org.apache.hyracks.algebricks.core.algebra.properties.StructuralPropertiesVector; |
| import org.apache.hyracks.algebricks.core.algebra.properties.UnorderedPartitionedProperty; |
| import org.apache.hyracks.algebricks.core.jobgen.impl.JobGenContext; |
| import org.apache.hyracks.algebricks.core.jobgen.impl.JobGenHelper; |
| import org.apache.hyracks.algebricks.core.jobgen.impl.OperatorSchemaImpl; |
| import org.apache.hyracks.algebricks.runtime.base.ISerializedAggregateEvaluatorFactory; |
| import org.apache.hyracks.algebricks.runtime.operators.aggreg.SerializableAggregatorDescriptorFactory; |
| import org.apache.hyracks.api.dataflow.value.IBinaryComparatorFactory; |
| import org.apache.hyracks.api.dataflow.value.IBinaryHashFunctionFamily; |
| import org.apache.hyracks.api.dataflow.value.INormalizedKeyComputerFactory; |
| import org.apache.hyracks.api.dataflow.value.RecordDescriptor; |
| import org.apache.hyracks.api.job.IOperatorDescriptorRegistry; |
| import org.apache.hyracks.dataflow.std.group.AbstractAggregatorDescriptorFactory; |
| import org.apache.hyracks.dataflow.std.group.HashSpillableTableFactory; |
| import org.apache.hyracks.dataflow.std.group.external.ExternalGroupOperatorDescriptor; |
| |
| public class ExternalGroupByPOperator extends AbstractGroupByPOperator { |
| |
| public ExternalGroupByPOperator(List<LogicalVariable> columnList) { |
| super(columnList); |
| } |
| |
| @Override |
| public PhysicalOperatorTag getOperatorTag() { |
| return PhysicalOperatorTag.EXTERNAL_GROUP_BY; |
| } |
| |
| @Override |
| public boolean isMicroOperator() { |
| return false; |
| } |
| |
| @Override |
| public void computeDeliveredProperties(ILogicalOperator op, IOptimizationContext context) { |
| List<ILocalStructuralProperty> propsLocal = new LinkedList<ILocalStructuralProperty>(); |
| |
| GroupByOperator gOp = (GroupByOperator) op; |
| Set<LogicalVariable> columnSet = new ListSet<LogicalVariable>(); |
| |
| if (!columnSet.isEmpty()) { |
| propsLocal.add(new LocalGroupingProperty(columnSet)); |
| } |
| for (ILogicalPlan p : gOp.getNestedPlans()) { |
| for (Mutable<ILogicalOperator> r : p.getRoots()) { |
| ILogicalOperator rOp = r.getValue(); |
| propsLocal.addAll(rOp.getDeliveredPhysicalProperties().getLocalProperties()); |
| } |
| } |
| |
| ILogicalOperator op2 = op.getInputs().get(0).getValue(); |
| IPhysicalPropertiesVector childProp = op2.getDeliveredPhysicalProperties(); |
| deliveredProperties = new StructuralPropertiesVector(childProp.getPartitioningProperty(), propsLocal); |
| } |
| |
| @Override |
| public PhysicalRequirements getRequiredPropertiesForChildren(ILogicalOperator op, |
| IPhysicalPropertiesVector reqdByParent, IOptimizationContext context) { |
| AbstractLogicalOperator aop = (AbstractLogicalOperator) op; |
| if (aop.getExecutionMode() == ExecutionMode.PARTITIONED) { |
| StructuralPropertiesVector[] pv = new StructuralPropertiesVector[1]; |
| pv[0] = new StructuralPropertiesVector( |
| UnorderedPartitionedProperty.of(new ListSet<>(columnList), context.getComputationNodeDomain()), |
| null); |
| return new PhysicalRequirements(pv, IPartitioningRequirementsCoordinator.NO_COORDINATION); |
| } else { |
| return emptyUnaryRequirements(); |
| } |
| } |
| |
| @Override |
| public void contributeRuntimeOperator(IHyracksJobBuilder builder, JobGenContext context, ILogicalOperator op, |
| IOperatorSchema opSchema, IOperatorSchema[] inputSchemas, IOperatorSchema outerPlanSchema) |
| throws AlgebricksException { |
| GroupByOperator gby = (GroupByOperator) op; |
| checkGroupAll(gby); |
| List<LogicalVariable> gbyCols = getGroupByColumns(); |
| int[] gbyColumns = JobGenHelper.variablesToFieldIndexes(gbyCols, inputSchemas[0]); |
| int[] fdColumns = getFdColumns(gby, inputSchemas[0]); |
| |
| if (gby.getNestedPlans().size() != 1) { |
| throw new AlgebricksException( |
| "External group-by currently works only for one nested plan with one root containing" |
| + "an aggregate and a nested-tuple-source."); |
| } |
| ILogicalPlan p0 = gby.getNestedPlans().get(0); |
| if (p0.getRoots().size() != 1) { |
| throw new AlgebricksException( |
| "External group-by currently works only for one nested plan with one root containing" |
| + "an aggregate and a nested-tuple-source."); |
| } |
| Mutable<ILogicalOperator> r0 = p0.getRoots().get(0); |
| AggregateOperator aggOp = (AggregateOperator) r0.getValue(); |
| |
| compileSubplans(inputSchemas[0], gby, opSchema, context); |
| |
| IPartialAggregationTypeComputer partialAggregationTypeComputer = context.getPartialAggregationTypeComputer(); |
| List<Object> intermediateTypes = new ArrayList<Object>(); |
| int n = aggOp.getExpressions().size(); |
| ISerializedAggregateEvaluatorFactory[] aff = new ISerializedAggregateEvaluatorFactory[n]; |
| int i = 0; |
| IExpressionRuntimeProvider expressionRuntimeProvider = context.getExpressionRuntimeProvider(); |
| ILogicalOperator aggOpInput = aggOp.getInputs().get(0).getValue(); |
| IOperatorSchema aggOpInputSchema = context.getSchema(aggOpInput); |
| IOperatorSchema[] aggOpInputSchemas = new IOperatorSchema[] { aggOpInputSchema }; |
| IVariableTypeEnvironment aggOpInputEnv = context.getTypeEnvironment(aggOpInput); |
| IVariableTypeEnvironment outputEnv = context.getTypeEnvironment(op); |
| for (Mutable<ILogicalExpression> exprRef : aggOp.getExpressions()) { |
| AggregateFunctionCallExpression aggFun = (AggregateFunctionCallExpression) exprRef.getValue(); |
| aff[i++] = expressionRuntimeProvider.createSerializableAggregateFunctionFactory(aggFun, aggOpInputEnv, |
| aggOpInputSchemas, context); |
| intermediateTypes |
| .add(partialAggregationTypeComputer.getType(aggFun, aggOpInputEnv, context.getMetadataProvider())); |
| } |
| |
| List<LogicalVariable> keyAndDecVariables = new ArrayList<LogicalVariable>(); |
| for (Pair<LogicalVariable, Mutable<ILogicalExpression>> p : gby.getGroupByList()) { |
| keyAndDecVariables.add(p.first); |
| } |
| for (Pair<LogicalVariable, Mutable<ILogicalExpression>> p : gby.getDecorList()) { |
| keyAndDecVariables.add(GroupByOperator.getDecorVariable(p)); |
| } |
| |
| for (LogicalVariable var : keyAndDecVariables) { |
| aggOpInputEnv.setVarType(var, outputEnv.getVarType(var)); |
| } |
| |
| IOperatorDescriptorRegistry spec = builder.getJobSpec(); |
| IBinaryComparatorFactory[] comparatorFactories = |
| JobGenHelper.variablesToAscBinaryComparatorFactories(gbyCols, aggOpInputEnv, context); |
| RecordDescriptor recordDescriptor = |
| JobGenHelper.mkRecordDescriptor(context.getTypeEnvironment(op), opSchema, context); |
| IBinaryHashFunctionFamily[] hashFunctionFactories = |
| JobGenHelper.variablesToBinaryHashFunctionFamilies(gbyCols, aggOpInputEnv, context); |
| |
| ISerializedAggregateEvaluatorFactory[] merges = new ISerializedAggregateEvaluatorFactory[n]; |
| List<LogicalVariable> usedVars = new ArrayList<LogicalVariable>(); |
| IOperatorSchema[] localInputSchemas = new IOperatorSchema[1]; |
| localInputSchemas[0] = new OperatorSchemaImpl(); |
| for (i = 0; i < n; i++) { |
| AggregateFunctionCallExpression aggFun = |
| (AggregateFunctionCallExpression) aggOp.getMergeExpressions().get(i).getValue(); |
| aggFun.getUsedVariables(usedVars); |
| } |
| i = 0; |
| for (Object type : intermediateTypes) { |
| aggOpInputEnv.setVarType(usedVars.get(i++), type); |
| } |
| for (LogicalVariable keyVar : keyAndDecVariables) { |
| localInputSchemas[0].addVariable(keyVar); |
| } |
| for (LogicalVariable usedVar : usedVars) { |
| localInputSchemas[0].addVariable(usedVar); |
| } |
| for (i = 0; i < n; i++) { |
| AggregateFunctionCallExpression mergeFun = |
| (AggregateFunctionCallExpression) aggOp.getMergeExpressions().get(i).getValue(); |
| merges[i] = expressionRuntimeProvider.createSerializableAggregateFunctionFactory(mergeFun, aggOpInputEnv, |
| localInputSchemas, context); |
| } |
| AbstractAggregatorDescriptorFactory aggregatorFactory = new SerializableAggregatorDescriptorFactory(aff); |
| aggregatorFactory.setSourceLocation(gby.getSourceLocation()); |
| AbstractAggregatorDescriptorFactory mergeFactory = new SerializableAggregatorDescriptorFactory(merges); |
| mergeFactory.setSourceLocation(gby.getSourceLocation()); |
| |
| INormalizedKeyComputerFactory normalizedKeyFactory = |
| JobGenHelper.variablesToAscNormalizedKeyComputerFactory(gbyCols, aggOpInputEnv, context); |
| |
| // Calculates the hash table size (# of unique hash values) based on the budget and a tuple size. |
| int frameSize = context.getFrameSize(); |
| long memoryBudgetInBytes = localMemoryRequirements.getMemoryBudgetInBytes(frameSize); |
| int allColumns = gbyColumns.length + fdColumns.length; |
| int hashTableSize = ExternalGroupOperatorDescriptor.calculateGroupByTableCardinality(memoryBudgetInBytes, |
| allColumns, frameSize); |
| |
| int framesLimit = localMemoryRequirements.getMemoryBudgetInFrames(); |
| long inputSize = framesLimit * (long) frameSize; |
| ExternalGroupOperatorDescriptor gbyOpDesc = new ExternalGroupOperatorDescriptor(spec, hashTableSize, inputSize, |
| gbyColumns, fdColumns, framesLimit, comparatorFactories, normalizedKeyFactory, aggregatorFactory, |
| mergeFactory, recordDescriptor, recordDescriptor, new HashSpillableTableFactory(hashFunctionFactories)); |
| gbyOpDesc.setSourceLocation(gby.getSourceLocation()); |
| contributeOpDesc(builder, gby, gbyOpDesc); |
| ILogicalOperator src = op.getInputs().get(0).getValue(); |
| builder.contributeGraphEdge(src, 0, op, 0); |
| } |
| |
| @Override |
| public Pair<int[], int[]> getInputOutputDependencyLabels(ILogicalOperator op) { |
| int[] inputDependencyLabels = new int[] { 0 }; |
| int[] outputDependencyLabels = new int[] { 1 }; |
| return new Pair<int[], int[]>(inputDependencyLabels, outputDependencyLabels); |
| } |
| } |
