public static void tar(String parentDir, String[] inputFiles, String outputFile)
      throws IOException {

    FileOutputStream out = null;
    try {
      out = new FileOutputStream(new File(parentDir, outputFile));
      TarArchiveOutputStream tOut = new TarArchiveOutputStream(
          new GzipCompressorOutputStream(new BufferedOutputStream(out)));

      for (int i = 0; i < inputFiles.length; i++) {
        File f = new File(parentDir, inputFiles[i]);
        TarArchiveEntry tarEntry = new TarArchiveEntry(f, f.getName());
        tOut.setLongFileMode(TarArchiveOutputStream.LONGFILE_GNU);
        tOut.putArchiveEntry(tarEntry);
        FileInputStream input = new FileInputStream(f);
        try {
          IOUtils.copy(input, tOut); // copy with 8K buffer, not close
        } finally {
          input.close();
        }
        tOut.closeArchiveEntry();
      }
      tOut.close(); // finishes inside
    } finally {
      // TarArchiveOutputStream seemed not to close files properly in error situation
      org.apache.hadoop.io.IOUtils.closeStream(out);
    }
  }
Archive all the files in the inputFiles into outputFile

@param inputFiles
@param outputFile
@throws IOException
common/src/java/org/apache/hadoop/hive/common/CompressionUtils.java