Java DataStatistics类代码示例

import org.apache.hadoop.mapred.gridmix.GenerateData.DataStatistics; //导入依赖的package包/类
@SuppressWarnings("unchecked")
void finalize(JobFactory factory, String inputPath, long dataSize, 
              UserResolver userResolver, DataStatistics stats,
              Configuration conf) 
throws IOException {
  numJobsInInputTrace = factory.numJobsInTrace;
  endTime = System.currentTimeMillis();
   if ("-".equals(inputPath)) {
    inputTraceLocation = Summarizer.NA;
    inputTraceSignature = Summarizer.NA;
  } else {
    Path inputTracePath = new Path(inputPath);
    FileSystem fs = inputTracePath.getFileSystem(conf);
    inputTraceLocation = fs.makeQualified(inputTracePath).toString();
    inputTraceSignature = getTraceSignature(inputPath);
  }
  jobSubmissionPolicy = Gridmix.getJobSubmissionPolicy(conf).name();
  resolver = userResolver.getClass().getName();
  if (dataSize > 0) {
    expectedDataSize = StringUtils.humanReadableInt(dataSize);
  } else {
    expectedDataSize = Summarizer.NA;
  }
  dataStats = stats;
  totalRuntime = System.currentTimeMillis() - getStartTime();
}
 

import org.apache.hadoop.mapred.gridmix.GenerateData.DataStatistics; //导入依赖的package包/类
static String stringifyDataStatistics(DataStatistics stats) {
  if (stats != null) {
    StringBuffer buffer = new StringBuffer();
    String compressionStatus = stats.isDataCompressed() 
                               ? "Compressed" 
                               : "Uncompressed";
    buffer.append(compressionStatus).append(" input data size: ");
    buffer.append(StringUtils.humanReadableInt(stats.getDataSize()));
    buffer.append(", ");
    buffer.append("Number of files: ").append(stats.getNumFiles());

    return buffer.toString();
  } else {
    return Summarizer.NA;
  }
}
 

import org.apache.hadoop.mapred.gridmix.GenerateData.DataStatistics; //导入依赖的package包/类
/**
 * This finalizes the summarizer.
 */
@SuppressWarnings("unchecked")
void finalize(JobFactory factory, String path, long size, 
              UserResolver resolver, DataStatistics stats, Configuration conf)
throws IOException {
  executionSummarizer.finalize(factory, path, size, resolver, stats, conf);
}
 

import org.apache.hadoop.mapred.gridmix.GenerateData.DataStatistics; //导入依赖的package包/类
/** Publishes compression related data statistics. Following statistics are
 * published
 * <ul>
 *   <li>Total compressed input data size</li>
 *   <li>Number of compressed input data files</li>
 *   <li>Compression Ratio</li>
 *   <li>Text data dictionary size</li>
 *   <li>Random text word size</li>
 * </ul>
 */
static DataStatistics publishCompressedDataStatistics(Path inputDir, 
                        Configuration conf, long uncompressedDataSize) 
throws IOException {
  FileSystem fs = inputDir.getFileSystem(conf);
  CompressionCodecFactory compressionCodecs = 
    new CompressionCodecFactory(conf);

  // iterate over compressed files and sum up the compressed file sizes
  long compressedDataSize = 0;
  int numCompressedFiles = 0;
  // obtain input data file statuses
  FileStatus[] outFileStatuses = 
    fs.listStatus(inputDir, new Utils.OutputFileUtils.OutputFilesFilter());
  for (FileStatus status : outFileStatuses) {
    // check if the input file is compressed
    if (compressionCodecs != null) {
      CompressionCodec codec = compressionCodecs.getCodec(status.getPath());
      if (codec != null) {
        ++numCompressedFiles;
        compressedDataSize += status.getLen();
      }
    }
  }

  LOG.info("Gridmix is configured to use compressed input data.");
  // publish the input data size
  LOG.info("Total size of compressed input data : " 
           + StringUtils.humanReadableInt(compressedDataSize));
  LOG.info("Total number of compressed input data files : " 
           + numCompressedFiles);

  if (numCompressedFiles == 0) {
    throw new RuntimeException("No compressed file found in the input" 
        + " directory : " + inputDir.toString() + ". To enable compression"
        + " emulation, run Gridmix either with "
        + " an input directory containing compressed input file(s) or" 
        + " use the -generate option to (re)generate it. If compression"
        + " emulation is not desired, disable it by setting '" 
        + COMPRESSION_EMULATION_ENABLE + "' to 'false'.");
  }
  
  // publish compression ratio only if its generated in this gridmix run
  if (uncompressedDataSize > 0) {
    // compute the compression ratio
    double ratio = ((double)compressedDataSize) / uncompressedDataSize;

    // publish the compression ratio
    LOG.info("Input Data Compression Ratio : " + ratio);
  }
  
  return new DataStatistics(compressedDataSize, numCompressedFiles, true);
}