org.apache.hudi.table.BulkInsertPartitioner Maven / Gradle / Ivy
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* 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;
import org.apache.hudi.common.fs.FSUtils;
import org.apache.hudi.common.util.Option;
import org.apache.hudi.execution.bulkinsert.BulkInsertSortMode;
import org.apache.hudi.io.WriteHandleFactory;
import java.io.Serializable;
/**
* Partitions the input records for bulk insert operation.
*
* The actual implementation of {@link BulkInsertPartitioner} is determined by the bulk insert
* sort mode, {@link BulkInsertSortMode}, specified by
* {@code HoodieWriteConfig.BULK_INSERT_SORT_MODE} (`hoodie.bulkinsert.sort.mode`).
*/
public interface BulkInsertPartitioner extends Serializable {
/**
* Partitions the input records based on the number of output partitions as a hint.
*
* Note that, the number of output partitions may or may not be enforced, depending on the
* specific implementation.
*
* @param records Input Hoodie records.
* @param outputPartitions Expected number of output partitions as a hint.
* @return
*/
I repartitionRecords(I records, int outputPartitions);
/**
* @return {@code true} if the records are sorted by partition-path; {@code false} otherwise.
*/
boolean arePartitionRecordsSorted();
/**
* Return file group id prefix for the given data partition.
* By default, return a new file group id prefix, so that incoming records will route to a fresh new file group
*
* @param partitionId data partition
* @return
*/
default String getFileIdPfx(int partitionId) {
return FSUtils.createNewFileIdPfx();
}
/**
* Return write handle factory for the given partition.
*
* @param partitionId data partition
* @return
*/
default Option getWriteHandleFactory(int partitionId) {
return Option.empty();
}
}