satishkotha commented on a change in pull request #2918: URL: https://github.com/apache/hudi/pull/2918#discussion_r629658906
########## File path: hudi-client/hudi-spark-client/src/test/java/org/apache/hudi/ClusteringIdentityTestExecutionStrategy.java ########## @@ -0,0 +1,102 @@ +/* + * 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; + +import org.apache.avro.Schema; +import org.apache.hudi.client.WriteStatus; +import org.apache.hudi.client.common.HoodieSparkEngineContext; +import org.apache.hudi.common.engine.TaskContextSupplier; +import org.apache.hudi.common.model.HoodieFileGroupId; +import org.apache.hudi.common.model.HoodieKey; +import org.apache.hudi.common.model.HoodieRecord; +import org.apache.hudi.common.model.HoodieRecordPayload; +import org.apache.hudi.config.HoodieWriteConfig; +import org.apache.hudi.exception.HoodieClusteringException; +import org.apache.hudi.execution.SparkLazyInsertIterable; +import org.apache.hudi.io.CreateFixedFileHandleFactory; +import org.apache.hudi.table.HoodieSparkCopyOnWriteTable; +import org.apache.hudi.table.HoodieSparkMergeOnReadTable; +import org.apache.hudi.table.HoodieTable; +import org.apache.hudi.table.action.cluster.strategy.ClusteringExecutionStrategy; +import org.apache.log4j.LogManager; +import org.apache.log4j.Logger; +import org.apache.spark.api.java.JavaRDD; + +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.Properties; + +/** + * Sample clustering strategy for testing. This actually doesnt transform data, but simply rewrites the same data + * in a new file. + */ +public class ClusteringIdentityTestExecutionStrategy<T extends HoodieRecordPayload<T>> + extends ClusteringExecutionStrategy<T, JavaRDD<HoodieRecord<T>>, JavaRDD<HoodieKey>, JavaRDD<WriteStatus>> { + + private static final Logger LOG = LogManager.getLogger(ClusteringIdentityTestExecutionStrategy.class); + + public ClusteringIdentityTestExecutionStrategy(HoodieSparkCopyOnWriteTable<T> table, + HoodieSparkEngineContext engineContext, + HoodieWriteConfig writeConfig) { + super(table, engineContext, writeConfig); + } + + public ClusteringIdentityTestExecutionStrategy(HoodieSparkMergeOnReadTable<T> table, + HoodieSparkEngineContext engineContext, + HoodieWriteConfig writeConfig) { + super(table, engineContext, writeConfig); + } + + @Override + public JavaRDD<WriteStatus> performClustering( + final JavaRDD<HoodieRecord<T>> inputRecords, + final int numOutputGroups, + final String instantTime, + final Map<String, String> strategyParams, + final Schema schema, + final List<HoodieFileGroupId> inputFileIds) { + if (inputRecords.getNumPartitions() != 1 || inputFileIds.size() != 1) { Review comment: yes, this is enforced by setting group size limit to a small number. See unit test added `.withClusteringMaxBytesInGroup(10) // set small number so each file is considered as separate clustering group` -- 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: us...@infra.apache.org
