| /* |
| * 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.hudi.table.action.compact.strategy; |
| |
| import org.apache.hudi.avro.model.HoodieCompactionOperation; |
| import org.apache.hudi.avro.model.HoodieCompactionPlan; |
| import org.apache.hudi.config.HoodieWriteConfig; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * CompactionStrategy which looks at total IO to be done for the compaction (read + write) and limits the list of |
| * compactions to be under a configured limit on the IO. |
| * |
| * @see CompactionStrategy |
| */ |
| public class BoundedIOCompactionStrategy extends CompactionStrategy { |
| |
| @Override |
| public List<HoodieCompactionOperation> orderAndFilter(HoodieWriteConfig writeConfig, |
| List<HoodieCompactionOperation> operations, List<HoodieCompactionPlan> pendingCompactionPlans) { |
| // Iterate through the operations in order and accept operations as long as we are within the |
| // IO limit |
| // Preserves the original ordering of compactions |
| List<HoodieCompactionOperation> finalOperations = new ArrayList<>(); |
| long targetIORemaining = writeConfig.getTargetIOPerCompactionInMB(); |
| for (HoodieCompactionOperation op : operations) { |
| long opIo = op.getMetrics().get(TOTAL_IO_MB).longValue(); |
| targetIORemaining -= opIo; |
| finalOperations.add(op); |
| if (targetIORemaining <= 0) { |
| return finalOperations; |
| } |
| } |
| return finalOperations; |
| } |
| } |