leonardBang commented on a change in pull request #11653: [FLINK-16951][parquet] Integrate parquet to file system connector URL: https://github.com/apache/flink/pull/11653#discussion_r407342371
########## File path: flink-formats/flink-parquet/src/main/java/org/apache/flink/formats/parquet/ParquetFileSystemFormatFactory.java ########## @@ -0,0 +1,247 @@ +/* + * 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.flink.formats.parquet; + +import org.apache.flink.api.common.io.FileInputFormat; +import org.apache.flink.api.common.io.InputFormat; +import org.apache.flink.api.common.serialization.BulkWriter; +import org.apache.flink.api.common.serialization.Encoder; +import org.apache.flink.configuration.ConfigOption; +import org.apache.flink.core.fs.FileInputSplit; +import org.apache.flink.core.fs.Path; +import org.apache.flink.formats.parquet.row.ParquetRowDataBuilder; +import org.apache.flink.formats.parquet.utils.SerializableConfiguration; +import org.apache.flink.formats.parquet.vector.ParquetColumnarRowSplitReader; +import org.apache.flink.formats.parquet.vector.ParquetSplitReaderUtil; +import org.apache.flink.table.dataformat.BaseRow; +import org.apache.flink.table.descriptors.DescriptorProperties; +import org.apache.flink.table.filesystem.FileSystemFormatFactory; +import org.apache.flink.table.filesystem.PartitionPathUtils; +import org.apache.flink.table.types.DataType; +import org.apache.flink.table.types.logical.LogicalType; +import org.apache.flink.table.types.logical.RowType; + +import org.apache.hadoop.conf.Configuration; +import org.apache.parquet.hadoop.ParquetOutputFormat; + +import java.io.IOException; +import java.util.Arrays; +import java.util.HashMap; +import java.util.LinkedHashMap; +import java.util.List; +import java.util.Map; +import java.util.Optional; + +import static org.apache.flink.configuration.ConfigOptions.key; +import static org.apache.flink.table.dataformat.vector.VectorizedColumnBatch.DEFAULT_SIZE; +import static org.apache.flink.table.descriptors.FormatDescriptorValidator.FORMAT; +import static org.apache.flink.table.filesystem.RowPartitionComputer.restorePartValueFromType; + +/** + * Parquet {@link FileSystemFormatFactory} for file system. + */ +public class ParquetFileSystemFormatFactory implements FileSystemFormatFactory { + + public static final ConfigOption<Boolean> UTC_TIMEZONE = key("format.utc-timezone") + .booleanType() + .defaultValue(false) + .withDescription("Use UTC timezone or local timezone to the conversion between epoch" + + " time and LocalDateTime. Hive 0.x/1.x/2.x use local timezone. But Hive 3.x" + + " use UTC timezone"); + + /** + * Parquet properties, start with "parquet", see more in {@link ParquetOutputFormat}. + * - parquet.compression + * - parquet.block.size + * - parquet.page.size + * - parquet.dictionary.page.size + * - parquet.writer.max-padding + * - parquet.enable.dictionary + * - parquet.validation + * - parquet.writer.version + * ... + */ + public static final String PARQUET_PROPERTIES = "format.parquet"; + + @Override + public Map<String, String> requiredContext() { + Map<String, String> context = new HashMap<>(); + context.put(FORMAT, "parquet"); + return context; + } + + @Override + public List<String> supportedProperties() { + return Arrays.asList( + UTC_TIMEZONE.key(), + PARQUET_PROPERTIES + ".*" + ); + } + + private static boolean isUtcTimestamp(DescriptorProperties properties) { + return properties.getOptionalBoolean(UTC_TIMEZONE.key()) + .orElse(UTC_TIMEZONE.defaultValue()); + } + + private static Configuration getParquetConfiguration(DescriptorProperties properties) { + Configuration conf = new Configuration(); + properties.asMap().keySet() + .stream() + .filter(key -> key.startsWith(PARQUET_PROPERTIES)) + .forEach(key -> { + String value = properties.getString(key); + String subKey = key.substring((FORMAT + '.').length()); + conf.set(subKey, value); + }); + return conf; + } + + @Override + public InputFormat<BaseRow, ?> createReader(ReaderContext context) { + DescriptorProperties properties = new DescriptorProperties(); + properties.putProperties(context.getFormatProperties()); + + return new ParquetInputFormat( + context.getPaths(), + context.getSchema().getFieldNames(), + context.getSchema().getFieldDataTypes(), + context.getProjectFields(), + context.getDefaultPartName(), + context.getPushedDownLimit(), + getParquetConfiguration(properties), + isUtcTimestamp(properties)); + } + + @Override + public Optional<BulkWriter.Factory<BaseRow>> createBulkWriterFactory(WriterContext context) { + DescriptorProperties properties = new DescriptorProperties(); + properties.putProperties(context.getFormatProperties()); + + return Optional.of(ParquetRowDataBuilder.createWriterFactory( + RowType.of(Arrays.stream(context.getFieldTypesWithoutPartKeys()) + .map(DataType::getLogicalType) + .toArray(LogicalType[]::new), + context.getFieldNamesWithoutPartKeys()), + getParquetConfiguration(properties), + isUtcTimestamp(properties) + )); + } + + @Override + public Optional<Encoder<BaseRow>> createEncoder(WriterContext context) { + return Optional.empty(); + } + + @Override + public boolean supportsSchemaDerivation() { + return true; + } + + /** + * An implementation of {@link ParquetInputFormat} to read {@link BaseRow} records + * from Parquet files. + */ + public static class ParquetInputFormat extends FileInputFormat<BaseRow> { + + private static final long serialVersionUID = 1L; + + private final String[] fullFieldNames; + private final DataType[] fullFieldTypes; + private final int[] selectedFields; + private final String partDefaultName; + private final boolean utcTimestamp; + private final SerializableConfiguration conf; + private final long limit; + + private transient ParquetColumnarRowSplitReader reader; + private transient long currentReadCount; + + public ParquetInputFormat( + Path[] paths, + String[] fullFieldNames, + DataType[] fullFieldTypes, + int[] selectedFields, + String partDefaultName, + long limit, + Configuration conf, + boolean utcTimestamp) { + this.limit = limit; + super.setFilePaths(paths); Review comment: Call parent's function first in constructor? ---------------------------------------------------------------- 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 With regards, Apache Git Services
