WIP. HADOOP-17124. Support LZO Codec using aircompressor

hadoop-common-project/hadoop-common/pom.xml

@@ -375,6 +375,17 @@
       <artifactId>lz4-java</artifactId>
       <scope>provided</scope>
     </dependency>
+    <dependency>
+      <groupId>io.airlift</groupId>
+      <artifactId>aircompressor</artifactId>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.hadoop.gplcompression</groupId>
+      <artifactId>hadoop-lzo</artifactId>
+      <version>0.4.20</version>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 
   <build>

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/IOUtils.java

@@ -92,12 +92,14 @@ public static void copyBytes(InputStream in, OutputStream out, int buffSize)
     PrintStream ps = out instanceof PrintStream ? (PrintStream)out : null;
     byte buf[] = new byte[buffSize];
     int bytesRead = in.read(buf);
+    LOG.info("bytesRead: {}", bytesRead);
     while (bytesRead >= 0) {
       out.write(buf, 0, bytesRead);
       if ((ps != null) && ps.checkError()) {
         throw new IOException("Unable to write to output stream.");
       }
       bytesRead = in.read(buf);
+      LOG.info("bytesRead: {}", bytesRead);
     }
   }
 

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/CodecConstants.java

@@ -65,4 +65,9 @@ private CodecConstants() {
    * Default extension for {@link org.apache.hadoop.io.compress.ZStandardCodec}.
    */
   public static final String ZSTANDARD_CODEC_EXTENSION = ".zst";
+
+  /**
+   * Default extension for {@link org.apache.hadoop.io.compress.LzoCodec}.
+   */
+  public static final String LZO_CODEC_EXTENSION = ".lzo_deflate";
 }

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/LzoCodec2.java

@@ -0,0 +1,186 @@
+/*
+ * 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.hadoop.io.compress;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import org.apache.hadoop.conf.Configurable;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.CommonConfigurationKeys;
+import org.apache.hadoop.io.compress.lzo.LzoCompressor;
+import org.apache.hadoop.io.compress.lzo.LzoDecompressor;
+
+/**
+ * This class creates lzo compressors/decompressors.
+ */
+public class LzoCodec2 implements Configurable, CompressionCodec {
+  Configuration conf;
+
+  /**
+   * Set the configuration to be used by this object.
+   *
+   * @param conf the configuration object.
+   */
+  @Override
+  public void setConf(Configuration conf) {
+    this.conf = conf;
+  }
+
+  /**
+   * Return the configuration used by this object.
+   *
+   * @return the configuration object used by this object.
+   */
+  @Override
+  public Configuration getConf() {
+    return conf;
+  }
+
+  /**
+   * Create a {@link CompressionOutputStream} that will write to the given
+   * {@link OutputStream}.
+   *
+   * @param out the location for the final output stream
+   * @return a stream the user can write uncompressed data to have it compressed
+   * @throws IOException
+   */
+  @Override
+  public CompressionOutputStream createOutputStream(OutputStream out)
+          throws IOException {
+    return CompressionCodec.Util.
+            createOutputStreamWithCodecPool(this, conf, out);
+  }
+
+  /**
+   * Create a {@link CompressionOutputStream} that will write to the given
+   * {@link OutputStream} with the given {@link Compressor}.
+   *
+   * @param out        the location for the final output stream
+   * @param compressor compressor to use
+   * @return a stream the user can write uncompressed data to have it compressed
+   * @throws IOException
+   */
+  @Override
+  public CompressionOutputStream createOutputStream(OutputStream out,
+                                                    Compressor compressor) throws IOException {
+    int bufferSize = conf.getInt(
+            CommonConfigurationKeys.IO_COMPRESSION_CODEC_LZO_BUFFERSIZE_KEY,
+            CommonConfigurationKeys.IO_COMPRESSION_CODEC_LZO_BUFFERSIZE_DEFAULT);
+    io.airlift.compress.lzo.LzoCodec codec = new io.airlift.compress.lzo.LzoCodec();
+    Configuration lzoConf = new Configuration(this.conf);
+    lzoConf.setInt(CommonConfigurationKeys.IO_COMPRESSION_CODEC_LZO_BUFFERSIZE_KEY, bufferSize);
+    codec.setConf(lzoConf);
+    return codec.createOutputStream(out);
+  }
+
+  /**
+   * Get the type of {@link Compressor} needed by this {@link CompressionCodec}.
+   *
+   * @return the type of compressor needed by this codec.
+   */
+  @Override
+  public Class<? extends Compressor> getCompressorType() {
+    return LzoCompressor.class;
+  }
+
+  /**
+   * Create a new {@link Compressor} for use by this {@link CompressionCodec}.
+   *
+   * @return a new compressor for use by this codec
+   */
+  @Override
+  public Compressor createCompressor() {
+    int bufferSize = conf.getInt(
+            CommonConfigurationKeys.IO_COMPRESSION_CODEC_LZO_BUFFERSIZE_KEY,
+            CommonConfigurationKeys.IO_COMPRESSION_CODEC_LZO_BUFFERSIZE_DEFAULT);
+    return new LzoCompressor(bufferSize);
+  }
+
+  /**
+   * Create a {@link CompressionInputStream} that will read from the given
+   * input stream.
+   *
+   * @param in the stream to read compressed bytes from
+   * @return a stream to read uncompressed bytes from
+   * @throws IOException
+   */
+  @Override
+  public CompressionInputStream createInputStream(InputStream in)
+          throws IOException {
+    return CompressionCodec.Util.
+            createInputStreamWithCodecPool(this, conf, in);
+  }
+
+  /**
+   * Create a {@link CompressionInputStream} that will read from the given
+   * {@link InputStream} with the given {@link Decompressor}.
+   *
+   * @param in           the stream to read compressed bytes from
+   * @param decompressor decompressor to use
+   * @return a stream to read uncompressed bytes from
+   * @throws IOException
+   */
+  @Override
+  public CompressionInputStream createInputStream(InputStream in,
+                                                  Decompressor decompressor) throws IOException {
+    int bufferSize = conf.getInt(
+            CommonConfigurationKeys.IO_COMPRESSION_CODEC_LZO_BUFFERSIZE_KEY,
+            CommonConfigurationKeys.IO_COMPRESSION_CODEC_LZO_BUFFERSIZE_DEFAULT);
+    io.airlift.compress.lzo.LzoCodec codec = new io.airlift.compress.lzo.LzoCodec();
+    Configuration lzoConf = new Configuration(this.conf);
+    lzoConf.setInt(CommonConfigurationKeys.IO_COMPRESSION_CODEC_LZO_BUFFERSIZE_KEY, bufferSize);
+    codec.setConf(lzoConf);
+    return codec.createInputStream(in);
+  }
+
+  /**
+   * Get the type of {@link Decompressor} needed by this {@link CompressionCodec}.
+   *
+   * @return the type of decompressor needed by this codec.
+   */
+  @Override
+  public Class<? extends Decompressor> getDecompressorType() {
+    return LzoDecompressor.class;
+  }
+
+  /**
+   * Create a new {@link Decompressor} for use by this {@link CompressionCodec}.
+   *
+   * @return a new decompressor for use by this codec
+   */
+  @Override
+  public Decompressor createDecompressor() {
+    int bufferSize = conf.getInt(
+            CommonConfigurationKeys.IO_COMPRESSION_CODEC_LZO_BUFFERSIZE_KEY,
+            CommonConfigurationKeys.IO_COMPRESSION_CODEC_LZO_BUFFERSIZE_DEFAULT);
+    return new LzoDecompressor(bufferSize);
+  }
+
+  /**
+   * Get the default filename extension for this kind of compression.
+   *
+   * @return <code>.lzo_deflate</code>.
+   */
+  @Override
+  public String getDefaultExtension() {
+    return CodecConstants.LZO_CODEC_EXTENSION;
+  }
+}