001/* 002 * Copyright (c) 2007-2017 Xplenty, Inc. All Rights Reserved. 003 * 004 * Project and contact information: http://www.cascading.org/ 005 * 006 * This file is part of the Cascading project. 007 * 008 * Licensed under the Apache License, Version 2.0 (the "License"); 009 * you may not use this file except in compliance with the License. 010 * You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, software 015 * distributed under the License is distributed on an "AS IS" BASIS, 016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 017 * See the License for the specific language governing permissions and 018 * limitations under the License. 019 */ 020 021package cascading.flow.tez.planner.rule.partitioner; 022 023import cascading.flow.planner.rule.RuleExpression; 024import cascading.flow.planner.rule.expressiongraph.NoGroupJoinMergeBoundaryTapExpressionGraph; 025import cascading.flow.planner.rule.partitioner.ExpressionRulePartitioner; 026import cascading.flow.tez.planner.rule.expressiongraph.ConsecutiveGroupOrMergeExpressionGraph; 027 028import static cascading.flow.planner.rule.PlanPhase.PartitionNodes; 029 030/** 031 * Merge -> (Merge or GroupBy) 032 */ 033public class ConsecutiveGroupOrMergesNodePartitioner extends ExpressionRulePartitioner 034 { 035 public ConsecutiveGroupOrMergesNodePartitioner() 036 { 037 super( 038 PartitionNodes, 039 040 new RuleExpression( 041 new NoGroupJoinMergeBoundaryTapExpressionGraph(), 042 new ConsecutiveGroupOrMergeExpressionGraph() 043 ) 044 ); 045 } 046 }