| /* |
| * 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.upgrade; |
| |
| import org.apache.hudi.client.common.HoodieEngineContext; |
| import org.apache.hudi.common.table.timeline.HoodieInstant; |
| import org.apache.hudi.common.table.timeline.HoodieTimeline; |
| import org.apache.hudi.config.HoodieWriteConfig; |
| import org.apache.hudi.table.HoodieSparkTable; |
| import org.apache.hudi.table.MarkerFiles; |
| |
| import java.util.List; |
| import java.util.stream.Collectors; |
| |
| /** |
| * Downgrade handle to assist in downgrading hoodie table from version 1 to 0. |
| */ |
| public class OneToZeroDowngradeHandler implements DowngradeHandler { |
| |
| @Override |
| public void downgrade(HoodieWriteConfig config, HoodieEngineContext context, String instantTime) { |
| // fetch pending commit info |
| HoodieSparkTable table = HoodieSparkTable.create(config, context); |
| HoodieTimeline inflightTimeline = table.getMetaClient().getCommitsTimeline().filterPendingExcludingCompaction(); |
| List<HoodieInstant> commits = inflightTimeline.getReverseOrderedInstants().collect(Collectors.toList()); |
| for (HoodieInstant commitInstant : commits) { |
| // delete existing marker files |
| MarkerFiles markerFiles = new MarkerFiles(table, commitInstant.getTimestamp()); |
| markerFiles.quietDeleteMarkerDir(context, config.getMarkersDeleteParallelism()); |
| } |
| } |
| } |