Package org.apache.hadoop.io

Examples of org.apache.hadoop.io.UTF8.readFields()

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      short replication = FSNamesystem.getFSNamesystem().getDefaultReplication();
      for (int i = 0; i < numFiles; i++) {
        UTF8 name = new UTF8();
        long modificationTime = 0;
        long blockSize = 0;
        name.readFields(in);
        // version 0 does not support per file replication
        if (!(imgVersion >= 0)) {
          replication = in.readShort(); // other versions do
          replication = FSEditLog.adjustReplication(replication);
        }
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  // code is moved into this package. This method should not be called
  // by other code.
  @SuppressWarnings("deprecation")
  public static String readString(DataInputStream in) throws IOException {
    UTF8 ustr = TL_DATA.get().U_STR;
    ustr.readFields(in);
    return ustr.toString();
  }

  static String readString_EmptyAsNull(DataInputStream in) throws IOException {
    final String s = readString(in);
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  }
 
  /** read the long value */
  static long readLongAsString(DataInputStream in) throws IOException {
    UTF8 ustr = TL_DATA.get().U_STR;
    ustr.readFields(in);
    return Long.parseLong(ustr.toString());
  }

  /** write the long value */
  static void writeLongAsString(long value, DataOutputStream out) throws IOException {
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  }
 
  /** read the long value */
  static short readShortAsString(DataInputStream in) throws IOException {
    UTF8 ustr = TL_DATA.get().U_STR;
    ustr.readFields(in);
    return Short.parseShort(ustr.toString());
  }

  /** write the long value */
  static void writeShortAsString(short value, DataOutputStream out) throws IOException {
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  // Same comments apply for this method as for readString()
  @SuppressWarnings("deprecation")
  public static byte[] readBytes(DataInputStream in) throws IOException {
    UTF8 ustr = TL_DATA.get().U_STR;
    ustr.readFields(in);
    int len = ustr.getLength();
    byte[] bytes = new byte[len];
    System.arraycopy(ustr.getBytes(), 0, bytes, 0, len);
    return bytes;
  }
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  @SuppressWarnings("deprecation")
  public static byte[][] readPathComponents(DataInputStream in)
      throws IOException {
    UTF8 ustr = TL_DATA.get().U_STR;
   
    ustr.readFields(in);
    return DFSUtil.bytes2byteArray(ustr.getBytes(),
      ustr.getLength(), (byte) Path.SEPARATOR_CHAR);
  }

  /**
 
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        // read file info
        short replication = (short)conf.getInt("dfs.replication", 3);
        for (int i = 0; i < numFiles; i++) {
          UTF8 name = new UTF8();
          name.readFields(in);
          // version 0 does not support per file replication
          if( !(imgVersion >= 0) ) {
            replication = in.readShort(); // other versions do
            replication = FSEditLog.adjustReplication( replication, conf );
          }
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        // read file info
        short replication = (short)conf.getInt("dfs.replication", 3);
        for (int i = 0; i < numFiles; i++) {
          UTF8 name = new UTF8();
          name.readFields(in);
          // version 0 does not support per file replication
          if( !(imgVersion >= 0) ) {
            replication = in.readShort(); // other versions do
            replication = FSEditLog.adjustReplication( replication, conf );
          }
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            UTF8 name = new UTF8();
            ArrayWritable aw = null;
            Writable writables[];
            // version 0 does not support per file replication
            if (logVersion >= 0)
              name.readFields(in);  // read name only
            else {  // other versions do
              // get name and replication
              aw = new ArrayWritable(UTF8.class);
              aw.readFields(in);
              writables = aw.get();
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          }
          case OP_SET_REPLICATION: {
            UTF8 src = new UTF8();
            UTF8 repl = new UTF8();
            src.readFields(in);
            repl.readFields(in);
            replication = adjustReplication(fromLogReplication(repl));
            fsDir.unprotectedSetReplication(src.toString(),
                                            replication,
                                            null);
            break;
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