stevenzwu commented on a change in pull request #3501: URL: https://github.com/apache/iceberg/pull/3501#discussion_r772012894
########## File path: flink/v1.13/flink/src/test/java/org/apache/iceberg/flink/source/split/SplitHelpers.java ########## @@ -0,0 +1,96 @@ +/* + * 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.iceberg.flink.source.split; + +import java.io.File; +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.atomic.AtomicLong; +import java.util.stream.Collectors; +import org.apache.iceberg.BaseCombinedScanTask; +import org.apache.iceberg.CombinedScanTask; +import org.apache.iceberg.FileFormat; +import org.apache.iceberg.FileScanTask; +import org.apache.iceberg.MockFileScanTask; +import org.apache.iceberg.Table; +import org.apache.iceberg.data.GenericAppenderHelper; +import org.apache.iceberg.data.RandomGenericData; +import org.apache.iceberg.data.Record; +import org.apache.iceberg.flink.TestFixtures; +import org.apache.iceberg.flink.source.FlinkSplitPlanner; +import org.apache.iceberg.flink.source.ScanContext; +import org.apache.iceberg.hadoop.HadoopCatalog; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.junit.Assert; +import org.junit.rules.TemporaryFolder; + +public class SplitHelpers { + + private static final AtomicLong splitLengthIncrement = new AtomicLong(); + + private SplitHelpers() { + + } + + public static List<IcebergSourceSplit> createMockedSplits(int splitCount) { + final List<IcebergSourceSplit> splits = new ArrayList<>(); + for (int i = 0; i < splitCount; ++i) { + // make sure each task has a different length, + // as it is part of the splitId calculation. + // This way, we can make sure all generated splits have different splitIds + FileScanTask fileScanTask = new MockFileScanTask(1024 + splitLengthIncrement.incrementAndGet()); + CombinedScanTask combinedScanTask = new BaseCombinedScanTask(fileScanTask); + splits.add(IcebergSourceSplit.fromCombinedScanTask(combinedScanTask)); + } + return splits; + } + + public static List<IcebergSourceSplit> createFileSplits( + TemporaryFolder temporaryFolder, int fileCount, int filesPerSplit) throws Exception { + final File warehouseFile = temporaryFolder.newFolder(); + Assert.assertTrue(warehouseFile.delete()); + final String warehouse = "file:" + warehouseFile; + org.apache.hadoop.conf.Configuration hadoopConf = new org.apache.hadoop.conf.Configuration(); + final HadoopCatalog catalog = new HadoopCatalog(hadoopConf, warehouse); + try { + final Table table = catalog.createTable(TestFixtures.TABLE_IDENTIFIER, TestFixtures.SCHEMA); + final GenericAppenderHelper dataAppender = new GenericAppenderHelper( + table, FileFormat.PARQUET, temporaryFolder); + for (int i = 0; i < fileCount; ++i) { + List<Record> records = RandomGenericData.generate(TestFixtures.SCHEMA, 2, i); + dataAppender.appendToTable(records); + } + + final ScanContext scanContext = ScanContext.builder().build(); + final List<IcebergSourceSplit> splits = FlinkSplitPlanner.planIcebergSourceSplits(table, scanContext); + return splits.stream() + .flatMap(split -> { + List<List<FileScanTask>> filesList = Lists.partition(new ArrayList<>(split.task().files()), filesPerSplit); + return filesList.stream() + .map(files -> new BaseCombinedScanTask(files)) + .map(combinedScanTask -> IcebergSourceSplit.fromCombinedScanTask(combinedScanTask)); + }) + .collect(Collectors.toList()); + } finally { + catalog.dropTable(TestFixtures.TABLE_IDENTIFIER); Review comment: the method has been renamed and hopefully it won't be confusing. also updated javadoc -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
