| /* |
| * 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.execution.bulkinsert; |
| |
| import org.apache.hudi.common.model.HoodieRecord; |
| import org.apache.hudi.common.model.HoodieRecordPayload; |
| import org.apache.hudi.table.BulkInsertPartitioner; |
| |
| import org.apache.spark.api.java.JavaRDD; |
| |
| /** |
| * A built-in partitioner that does global sorting for the input records across partitions |
| * after repartition for bulk insert operation, corresponding to the |
| * {@code BulkInsertSortMode.GLOBAL_SORT} mode. |
| * |
| * @param <T> HoodieRecordPayload type |
| */ |
| public class GlobalSortPartitioner<T extends HoodieRecordPayload> |
| implements BulkInsertPartitioner<JavaRDD<HoodieRecord<T>>> { |
| |
| @Override |
| public JavaRDD<HoodieRecord<T>> repartitionRecords(JavaRDD<HoodieRecord<T>> records, |
| int outputSparkPartitions) { |
| // Now, sort the records and line them up nicely for loading. |
| return records.sortBy(record -> { |
| // Let's use "partitionPath + key" as the sort key. Spark, will ensure |
| // the records split evenly across RDD partitions, such that small partitions fit |
| // into 1 RDD partition, while big ones spread evenly across multiple RDD partitions |
| return new StringBuilder() |
| .append(record.getPartitionPath()) |
| .append("+") |
| .append(record.getRecordKey()) |
| .toString(); |
| }, true, outputSparkPartitions); |
| } |
| |
| @Override |
| public boolean arePartitionRecordsSorted() { |
| return true; |
| } |
| } |