| /* |
| * 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.flink.table.resource.batch.parallelism; |
| |
| import org.apache.flink.table.plan.nodes.exec.ExecNode; |
| |
| import java.util.LinkedHashSet; |
| import java.util.Set; |
| |
| /** |
| * There are no shuffle when transferring data in a shuffleStage. |
| */ |
| public class ShuffleStage { |
| |
| private final Set<ExecNode<?, ?>> execNodeSet = new LinkedHashSet<>(); |
| |
| // parallelism of this shuffleStage. |
| private int parallelism = -1; |
| |
| // whether this parallelism is final, if it is final, it can not be changed. |
| private boolean isFinalParallelism = false; |
| |
| public void addNode(ExecNode<?, ?> node) { |
| execNodeSet.add(node); |
| } |
| |
| public void addNodeSet(Set<ExecNode<?, ?>> nodeSet) { |
| execNodeSet.addAll(nodeSet); |
| } |
| |
| public void removeNode(ExecNode<?, ?> node) { |
| this.execNodeSet.remove(node); |
| } |
| |
| public Set<ExecNode<?, ?>> getExecNodeSet() { |
| return this.execNodeSet; |
| } |
| |
| public int getParallelism() { |
| return parallelism; |
| } |
| |
| public void setParallelism(int parallelism, boolean finalParallelism) { |
| if (this.isFinalParallelism) { |
| if (finalParallelism && this.parallelism != parallelism) { |
| throw new IllegalArgumentException("both fixed parallelism are not equal, old: " + this.parallelism + ", new: " + parallelism); |
| } |
| } else { |
| if (finalParallelism) { |
| this.parallelism = parallelism; |
| this.isFinalParallelism = true; |
| } else { |
| this.parallelism = Math.max(this.parallelism, parallelism); |
| } |
| } |
| } |
| |
| public boolean isFinalParallelism() { |
| return isFinalParallelism; |
| } |
| |
| } |