org.apache.hadoop.mapred.FileOutputFormat#getCompressOutput ( )源码实例Demo

下面列出了org.apache.hadoop.mapred.FileOutputFormat#getCompressOutput ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： iow-hadoop-streaming 文件： AvroAsJsonOutputFormat.java

static <K> void configureDataFileWriter(DataFileWriter<K> writer,
    JobConf job) throws UnsupportedEncodingException {

    if (FileOutputFormat.getCompressOutput(job)) {
        int level = job.getInt(org.apache.avro.mapred.AvroOutputFormat.DEFLATE_LEVEL_KEY,
                org.apache.avro.mapred.AvroOutputFormat.DEFAULT_DEFLATE_LEVEL);
        String codecName = job.get(AvroJob.OUTPUT_CODEC, DEFLATE_CODEC);
        CodecFactory factory = codecName.equals(DEFLATE_CODEC) ?
            CodecFactory.deflateCodec(level) : CodecFactory.fromString(codecName);
        writer.setCodec(factory);
    }

    writer.setSyncInterval(job.getInt(org.apache.avro.mapred.AvroOutputFormat.SYNC_INTERVAL_KEY,
            DEFAULT_SYNC_INTERVAL));

    // copy metadata from job
    for (Map.Entry<String,String> e : job) {
        if (e.getKey().startsWith(AvroJob.TEXT_PREFIX))
            writer.setMeta(e.getKey().substring(AvroJob.TEXT_PREFIX.length()),e.getValue());
        if (e.getKey().startsWith(AvroJob.BINARY_PREFIX))
            writer.setMeta(e.getKey().substring(AvroJob.BINARY_PREFIX.length()),
                   URLDecoder.decode(e.getValue(), "ISO-8859-1")
                   .getBytes("ISO-8859-1"));
    }
}

源代码2 项目： spork 文件： AvroRecordWriter.java

static void configureDataFileWriter(DataFileWriter<GenericData.Record> writer,
    JobConf job) throws UnsupportedEncodingException {
  if (FileOutputFormat.getCompressOutput(job)) {
    int level = job.getInt(DEFLATE_LEVEL_KEY,
        DEFAULT_DEFLATE_LEVEL);
    String codecName = job.get(AvroJob.OUTPUT_CODEC, DEFLATE_CODEC);
    CodecFactory factory = codecName.equals(DEFLATE_CODEC)
      ? CodecFactory.deflateCodec(level)
      : CodecFactory.fromString(codecName);
    writer.setCodec(factory);
  }

  // Do max as core-default.xml has io.file.buffer.size as 4K
  writer.setSyncInterval(job.getInt(SYNC_INTERVAL_KEY, Math.max(
          job.getInt("io.file.buffer.size", DEFAULT_SYNC_INTERVAL), DEFAULT_SYNC_INTERVAL)));

  // copy metadata from job
  for (Map.Entry<String,String> e : job) {
    if (e.getKey().startsWith(AvroJob.TEXT_PREFIX))
      writer.setMeta(e.getKey().substring(AvroJob.TEXT_PREFIX.length()),
                     e.getValue());
    if (e.getKey().startsWith(AvroJob.BINARY_PREFIX))
      writer.setMeta(e.getKey().substring(AvroJob.BINARY_PREFIX.length()),
                     URLDecoder.decode(e.getValue(), "ISO-8859-1")
                     .getBytes("ISO-8859-1"));
  }
}

方法所在类

org.apache.hadoop.mapred.FileOutputFormat