| /* |
| * 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.nemo.compiler.optimizer.pass.compiletime.reshaping; |
| |
| import org.apache.nemo.common.ir.IRDAG; |
| import org.apache.nemo.common.ir.edge.executionproperty.CommunicationPatternProperty; |
| import org.apache.nemo.common.ir.vertex.utility.RelayVertex; |
| import org.apache.nemo.compiler.optimizer.pass.compiletime.Requires; |
| |
| /** |
| * Inserts the RelayVertex for each shuffle edge. |
| */ |
| @Requires(CommunicationPatternProperty.class) |
| public final class LargeShuffleReshapingPass extends ReshapingPass { |
| |
| /** |
| * Default constructor. |
| */ |
| public LargeShuffleReshapingPass() { |
| super(LargeShuffleReshapingPass.class); |
| } |
| |
| |
| @Override |
| public IRDAG apply(final IRDAG dag) { |
| dag.topologicalDo(vertex -> |
| dag.getIncomingEdgesOf(vertex).forEach(edge -> { |
| if (CommunicationPatternProperty.Value.SHUFFLE |
| .equals(edge.getPropertyValue(CommunicationPatternProperty.class).get())) { |
| dag.insert(new RelayVertex(), edge); |
| } |
| }) |
| ); |
| return dag; |
| } |
| } |