jihyun commented on a change in pull request #6774: [FLINK-10457] Support SequenceFile for StreamingFileSink URL: https://github.com/apache/flink/pull/6774#discussion_r238608508
########## File path: flink-formats/flink-sequencefile/src/main/java/org/apache/flink/formats/sequencefile/SequenceFileWriterFactory.java ########## @@ -0,0 +1,137 @@ +/* + * 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.sequencefile; + +import org.apache.flink.annotation.PublicEvolving; +import org.apache.flink.api.common.serialization.BulkWriter; +import org.apache.flink.api.java.tuple.Tuple2; +import org.apache.flink.core.fs.FSDataOutputStream; +import org.apache.flink.core.fs.FileSystem; +import org.apache.flink.core.fs.Path; +import org.apache.flink.runtime.fs.hdfs.HadoopFileSystem; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.io.SequenceFile; +import org.apache.hadoop.io.Writable; +import org.apache.hadoop.io.compress.CompressionCodec; +import org.apache.hadoop.io.compress.CompressionCodecFactory; + +import java.io.IOException; + +/** + * A factory that creates a SequenceFile {@link BulkWriter}. + * + * @param <K> The type of key to write. It should be writable. + * @param <V> The type of value to write. It should be writable. + */ +@PublicEvolving +public class SequenceFileWriterFactory<K extends Writable, V extends Writable> implements BulkWriter.Factory<Tuple2<K, V>> { + private static final long serialVersionUID = 1L; + + private final SerializableHadoopConfiguration serdeHadoopConf; + private final Class<K> keyClass; + private final Class<V> valueClass; + private final String compressionCodecName; + private final SequenceFile.CompressionType compressionType; + + /** + * Creates a new SequenceFileWriterFactory using the given builder to assemble the + * SequenceFileWriter. + * + * @param hadoopConf The Hadoop configuration for Sequence File Writer. + * @param keyClass The class of key to write. + * @param valueClass The class of value to write. + */ + public SequenceFileWriterFactory(Configuration hadoopConf, Class<K> keyClass, Class<V> valueClass) { + this(hadoopConf, keyClass, valueClass, "None", SequenceFile.CompressionType.BLOCK); + } + + /** + * Creates a new SequenceFileWriterFactory using the given builder to assemble the + * SequenceFileWriter. + * + * @param hadoopConf The Hadoop configuration for Sequence File Writer. + * @param keyClass The class of key to write. + * @param valueClass The class of value to write. + * @param compressionCodecName The name of compression codec. + */ + public SequenceFileWriterFactory(Configuration hadoopConf, Class<K> keyClass, Class<V> valueClass, String compressionCodecName) { + this(hadoopConf, keyClass, valueClass, compressionCodecName, SequenceFile.CompressionType.BLOCK); + } + + /** + * Creates a new SequenceFileWriterFactory using the given builder to assemble the + * SequenceFileWriter. + * + * @param hadoopConf The Hadoop configuration for Sequence File Writer. + * @param keyClass The class of key to write. + * @param valueClass The class of value to write. + * @param compressionCodecName The name of compression codec. + * @param compressionType The type of compression level. + */ + public SequenceFileWriterFactory(Configuration hadoopConf, Class<K> keyClass, Class<V> valueClass, String compressionCodecName, SequenceFile.CompressionType compressionType) { + this.serdeHadoopConf = new SerializableHadoopConfiguration(hadoopConf); + this.keyClass = keyClass; + this.valueClass = valueClass; + this.compressionCodecName = compressionCodecName; + this.compressionType = compressionType; + } + + @Override + public BulkWriter<Tuple2<K, V>> create(FSDataOutputStream out) throws IOException { + org.apache.hadoop.fs.FSDataOutputStream stream = new org.apache.hadoop.fs.FSDataOutputStream(out, null); + CompressionCodec compressionCodec = getCompressionCodec(serdeHadoopConf.get(), compressionCodecName); + SequenceFile.Writer writer = SequenceFile.createWriter(serdeHadoopConf.get(), Review comment: Did you mean `hadoopConfig` right? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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