RussellSpitzer commented on code in PR #10176: URL: https://github.com/apache/iceberg/pull/10176#discussion_r1679815600
########## data/src/test/java/org/apache/iceberg/data/TestPartitionStatsWriterUtil.java: ########## @@ -0,0 +1,122 @@ +/* + * 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.data; + +import static org.apache.iceberg.PartitionStatsUtil.Column; + +import java.nio.file.Paths; +import java.util.List; +import java.util.Random; +import org.apache.iceberg.Files; +import org.apache.iceberg.PartitionData; +import org.apache.iceberg.PartitionSpec; +import org.apache.iceberg.PartitionStatsUtil; +import org.apache.iceberg.Partitioning; +import org.apache.iceberg.Schema; +import org.apache.iceberg.SortOrder; +import org.apache.iceberg.Table; +import org.apache.iceberg.TestTables; +import org.apache.iceberg.io.CloseableIterable; +import org.apache.iceberg.io.OutputFile; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableList; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.apache.iceberg.types.Types; +import org.assertj.core.api.Assertions; +import org.junit.Rule; +import org.junit.Test; +import org.junit.rules.TemporaryFolder; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class TestPartitionStatsWriterUtil { + private static final Logger LOG = LoggerFactory.getLogger(TestPartitionStatsWriterUtil.class); + + private static final Schema SCHEMA = + new Schema( + Types.NestedField.required(1, "id", Types.LongType.get()), + Types.NestedField.optional(2, "data", Types.StringType.get()), + Types.NestedField.optional(3, "binary", Types.BinaryType.get())); + + @Rule public TemporaryFolder temp = new TemporaryFolder(); + + @Test + public void testPartitionStats() throws Exception { + PartitionSpec spec = PartitionSpec.builderFor(SCHEMA).identity("id").build(); + Table testTable = + TestTables.create( + temp.newFolder("test_partition_stats"), + "test_partition_stats", + SCHEMA, + spec, + SortOrder.unsorted(), + 2); + + Types.StructType partitionSchema = Partitioning.partitionType(testTable); + Schema dataSchema = PartitionStatsUtil.schema(partitionSchema); + + ImmutableList.Builder<Record> partitionListBuilder = ImmutableList.builder(); + + long seed = System.currentTimeMillis(); + LOG.info("Seed used for random generator is {}", seed); + Random random = new Random(seed); + + for (int i = 0; i < 42; i++) { + PartitionData partitionData = + new PartitionData( + dataSchema.findField(Column.PARTITION_DATA.name()).type().asStructType()); + partitionData.set(0, random.nextLong()); + + Record record = GenericRecord.create(dataSchema); + record.set( + Column.PARTITION_DATA.ordinal(), + PartitionStatsUtil.partitionDataToRecord(partitionSchema, partitionData)); + record.set(Column.SPEC_ID.ordinal(), random.nextInt(10)); + record.set(Column.DATA_RECORD_COUNT.ordinal(), random.nextLong()); + record.set(Column.DATA_FILE_COUNT.ordinal(), random.nextInt()); + record.set(Column.DATA_FILE_SIZE_IN_BYTES.ordinal(), 1024L * random.nextInt(20)); + record.set(Column.POSITION_DELETE_RECORD_COUNT.ordinal(), random.nextLong()); + record.set(Column.POSITION_DELETE_FILE_COUNT.ordinal(), random.nextInt()); + record.set(Column.EQUALITY_DELETE_RECORD_COUNT.ordinal(), random.nextLong()); + record.set(Column.EQUALITY_DELETE_FILE_COUNT.ordinal(), random.nextInt()); + record.set(Column.TOTAL_RECORD_COUNT.ordinal(), random.nextLong()); + record.set(Column.LAST_UPDATED_AT.ordinal(), random.nextLong()); + record.set(Column.LAST_UPDATED_SNAPSHOT_ID.ordinal(), random.nextLong()); + + partitionListBuilder.add(record); + } + List<Record> records = partitionListBuilder.build(); + + OutputFile outputFile = PartitionStatsWriterUtil.newPartitionStatsFile(testTable, 42L); + PartitionStatsWriterUtil.writePartitionStatsFile(testTable, records.iterator(), outputFile); + + Assertions.assertThat(Paths.get(outputFile.location())).exists(); + + List<Record> rows; + try (CloseableIterable<Record> recordIterator = + PartitionStatsWriterUtil.readPartitionStatsFile( + dataSchema, Files.localInput(outputFile.location()))) { + rows = Lists.newArrayList(recordIterator); + } + + Assertions.assertThat(rows).hasSize(records.size()); Review Comment: This whole block can use the assertIterableEquals ```java Assertions.assertIterableEquals(); ``` -- This is an automated message from the Apache Git Service. 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