| /* |
| * 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.annotating; |
| |
| import org.apache.nemo.common.ir.IRDAG; |
| import org.apache.nemo.common.ir.edge.executionproperty.CommunicationPatternProperty; |
| import org.apache.nemo.common.ir.vertex.executionproperty.ClonedSchedulingProperty; |
| import org.apache.nemo.compiler.optimizer.pass.compiletime.Requires; |
| |
| /** |
| * Set the ClonedScheduling property of source vertices, in an upfront manner. |
| */ |
| @Annotates(ClonedSchedulingProperty.class) |
| @Requires(CommunicationPatternProperty.class) |
| public final class UpfrontCloningPass extends AnnotatingPass { |
| /** |
| * Default constructor. |
| */ |
| public UpfrontCloningPass() { |
| super(UpfrontCloningPass.class); |
| } |
| |
| @Override |
| public IRDAG apply(final IRDAG dag) { |
| dag.getVertices().stream() |
| .filter(vertex -> dag.getIncomingEdgesOf(vertex.getId()) |
| .stream() |
| // TODO #198: Handle Un-cloneable Beam Sink Operators |
| // only shuffle receivers (for now... as particular Beam sink operators fail when cloned) |
| .anyMatch(edge -> |
| edge.getPropertyValue(CommunicationPatternProperty.class) |
| .orElseThrow(IllegalStateException::new) |
| .equals(CommunicationPatternProperty.Value.SHUFFLE)) |
| ) |
| .forEach(vertex -> vertex.setProperty( |
| ClonedSchedulingProperty.of(new ClonedSchedulingProperty.CloneConf()))); // clone upfront, always |
| return dag; |
| } |
| } |