danny0405 commented on a change in pull request #3046: URL: https://github.com/apache/hudi/pull/3046#discussion_r648033744
########## File path: hudi-flink/src/main/java/org/apache/hudi/util/CompactionUtil.java ########## @@ -0,0 +1,88 @@ +/* + * 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.util; + +import org.apache.hudi.common.table.HoodieTableMetaClient; +import org.apache.hudi.common.table.TableSchemaResolver; +import org.apache.hudi.common.table.timeline.HoodieActiveTimeline; +import org.apache.hudi.common.table.timeline.HoodieInstant; +import org.apache.hudi.common.table.timeline.HoodieTimeline; +import org.apache.hudi.common.util.Option; +import org.apache.hudi.common.util.ValidationUtils; +import org.apache.hudi.configuration.FlinkOptions; + +import org.apache.avro.Schema; +import org.apache.flink.configuration.Configuration; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.List; +import java.util.stream.Collectors; + +/** + * Utilities for flink hudi compaction. + */ +public class CompactionUtil { + + private static final Logger LOG = LoggerFactory.getLogger(CompactionUtil.class); + + /** + * Creates the metaClient. + * */ + public static HoodieTableMetaClient createMetaClient(Configuration conf) { + return HoodieTableMetaClient.builder().setBasePath(conf.getString(FlinkOptions.PATH)).setConf(FlinkClientUtil.getHadoopConf()).build(); + } + + /** + * Gets compaction Instant time. + * */ + public static String getCompactionInstantTime(HoodieTableMetaClient metaClient) { + Option<HoodieInstant> hoodieInstantOption = metaClient.getCommitsTimeline().filterPendingExcludingCompaction().firstInstant(); + if (hoodieInstantOption.isPresent()) { + HoodieInstant latestInstant = hoodieInstantOption.get(); + String newCommitTime = StreamerUtil.instantTimeSubtract(latestInstant.getTimestamp(), 1); + // Committed and pending compaction instants should have strictly lower timestamps + List<HoodieInstant> conflictingInstants = metaClient.getActiveTimeline() + .getWriteTimeline().filterCompletedAndCompactionInstants().getInstants() + .filter(instant -> HoodieTimeline.compareTimestamps( + instant.getTimestamp(), HoodieTimeline.GREATER_THAN_OR_EQUALS, newCommitTime)) + .collect(Collectors.toList()); + ValidationUtils.checkArgument(conflictingInstants.isEmpty(), + "Following instants have timestamps >= compactionInstant (" + newCommitTime + ") Instants :" + + conflictingInstants); + return newCommitTime; + } else { + return HoodieActiveTimeline.createNewInstantTime(); + } + } + + /** + * Sets up the avro schema string into the give configuration {@code conf} + * through reading from the hoodie table metadata. + * + * @param conf The configuration + */ + public static Configuration setAvroSchema(Configuration conf, HoodieTableMetaClient metaClient) throws Exception { + TableSchemaResolver tableSchemaResolver = new TableSchemaResolver(metaClient); + Schema tableAvroSchema = tableSchemaResolver.getTableAvroSchema(false); + conf.setString(FlinkOptions.READ_AVRO_SCHEMA, tableAvroSchema.toString()); + Review comment: The method should not have return value. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
