How to use

hexStringToByte

method

in

org.apache.hadoop.util.StringUtils

@Override
public byte[] getBytes() {
 return StringUtils.hexStringToByte((String) json.get(CHECKSUM_BYTES_JSON));
}

/**
 * Convert a string of lines that look like:
 *   "68 72 70 63 02 00 00 00  82 00 1d 6f 72 67 2e 61 hrpc.... ...org.a"
 * .. into an array of bytes.
 */
private static byte[] hexDumpToBytes(String hexdump) {
 final int LAST_HEX_COL = 3 * 16;
 
 StringBuilder hexString = new StringBuilder();
 
 for (String line : hexdump.toUpperCase().split("\n")) {
  hexString.append(line.substring(0, LAST_HEX_COL).replace(" ", ""));
 }
 return StringUtils.hexStringToByte(hexString.toString());
}

public static Object getObject(JobConf conf, String key) {
  String s = conf.get(key);
  if(s==null) return null;
  byte[] val = StringUtils.hexStringToByte(s);
  return deserialize(val);
}

/**
 * Returns a disk id (0-based) index from the Hdfs VolumeId object. There is
 * currently no public API to get at the volume id. We'll have to get it by
 * accessing the internals.
 */
public static int getDiskId(VolumeId hdfsVolumeId){
  // Initialize the diskId as -1 to indicate it is unknown
  int diskId = -1;
  if (hdfsVolumeId != null) {
    String volumeIdString = hdfsVolumeId.toString();
    byte[] volumeIdBytes = StringUtils.hexStringToByte(volumeIdString);
    if (volumeIdBytes != null && volumeIdBytes.length == 4) {
      diskId = Utils.toInt(volumeIdBytes);
    }else if (volumeIdBytes.length == 1) {
      diskId = (int) volumeIdBytes[0];  // support hadoop-2.0.2
    }
  }
  return diskId;
}

pos = Long.parseLong(st[0]);
int cap = Integer.parseInt(st[1]);
byte [] hash = StringUtils.hexStringToByte(st[2]);
byte [] b = new byte [cap];
r.seek(pos);

/**
 * Convert a string of lines that look like:
 *   "68 72 70 63 02 00 00 00  82 00 1d 6f 72 67 2e 61 hrpc.... ...org.a"
 * .. into an array of bytes.
 */
private static byte[] hexDumpToBytes(String hexdump) {
 final int LAST_HEX_COL = 3 * 16;
 
 StringBuilder hexString = new StringBuilder();
 
 for (String line : StringUtils.toUpperCase(hexdump).split("\n")) {
  hexString.append(line.substring(0, LAST_HEX_COL).replace(" ", ""));
 }
 return StringUtils.hexStringToByte(hexString.toString());
}

/**
 * Convert a string of lines that look like:
 *   "68 72 70 63 02 00 00 00  82 00 1d 6f 72 67 2e 61 hrpc.... ...org.a"
 * .. into an array of bytes.
 */
private static byte[] hexDumpToBytes(String hexdump) {
 final int LAST_HEX_COL = 3 * 16;
 
 StringBuilder hexString = new StringBuilder();
 
 for (String line : StringUtils.toUpperCase(hexdump).split("\n")) {
  hexString.append(line.substring(0, LAST_HEX_COL).replace(" ", ""));
 }
 return StringUtils.hexStringToByte(hexString.toString());
}

final String algorithm = (String)m.get("algorithm");
final int length = ((Number) m.get("length")).intValue();
final byte[] bytes = StringUtils.hexStringToByte((String)m.get("bytes"));

final String algorithm = (String)m.get("algorithm");
final int length = ((Number) m.get("length")).intValue();
final byte[] bytes = StringUtils.hexStringToByte((String) m.get("bytes"));

final String algorithm = (String)m.get("algorithm");
final int length = ((Number) m.get("length")).intValue();
final byte[] bytes = StringUtils.hexStringToByte((String)m.get("bytes"));

byte[] imageBytes = StringUtils.hexStringToByte(
 "fffffffee17c0d2700000000");
FileOutputStream fos = new FileOutputStream(imageFile);

/**
 * Test case for an empty edit log from a prior version of Hadoop.
 */
@Test
public void testPreTxIdEditLogNoEdits() throws Exception {
 FSNamesystem namesys = Mockito.mock(FSNamesystem.class);
 namesys.dir = Mockito.mock(FSDirectory.class);
 long numEdits = testLoad(
   StringUtils.hexStringToByte("ffffffed"), // just version number
   namesys);
 assertEquals(0, numEdits);
}

byte[] imageBytes = StringUtils.hexStringToByte(
 "fffffffee17c0d2700000000");
FileOutputStream fos = new FileOutputStream(imageFile);