public void serialize(final DataOutput output) {
try {
output.writeDouble(maxError);
output.writeDouble(alpha);
output.writeLong(landmarkInSeconds);
output.writeLong(min);
output.writeLong(max);
output.writeInt(totalNodeCount);
postOrderTraversal(
root,
new Callback() {
@Override
public boolean process(Node node) {
try {
serializeNode(output, node);
} catch (IOException e) {
Throwables.propagate(e);
}
return true;
}
});
} catch (IOException e) {
Throwables.propagate(e);
}
}
// Used for internal Hadoop purposes.
// Describes how to write this node across a network
public void write(DataOutput out) throws IOException {
out.writeLong(nodeid);
out.writeDouble(pageRank);
for (long n : outgoing) {
out.writeLong(n);
}
out.writeLong(-1);
}
public void writeTo(DataOutput out) throws Exception {
out.writeInt(status);
Bits.writeString(classname, out);
Bits.writeString(name, out);
out.writeLong(start_time);
out.writeLong(stop_time);
Bits.writeString(failure_type, out);
Bits.writeString(failure_msg, out);
Bits.writeString(stack_trace, out);
}
/** Write a {@link Writable}, {@link String}, primitive type, or an array of the preceding. */
public static void writeObject(
DataOutput out, Object instance, Class declaredClass, Configuration conf) throws IOException {
if (instance == null) { // null
instance = new NullInstance(declaredClass, conf);
declaredClass = Writable.class;
}
UTF8.writeString(out, declaredClass.getName()); // always write declared
if (declaredClass.isArray()) { // array
int length = Array.getLength(instance);
out.writeInt(length);
for (int i = 0; i < length; i++) {
writeObject(out, Array.get(instance, i), declaredClass.getComponentType(), conf);
}
} else if (declaredClass == String.class) { // String
UTF8.writeString(out, (String) instance);
} else if (declaredClass.isPrimitive()) { // primitive type
if (declaredClass == Boolean.TYPE) { // boolean
out.writeBoolean(((Boolean) instance).booleanValue());
} else if (declaredClass == Character.TYPE) { // char
out.writeChar(((Character) instance).charValue());
} else if (declaredClass == Byte.TYPE) { // byte
out.writeByte(((Byte) instance).byteValue());
} else if (declaredClass == Short.TYPE) { // short
out.writeShort(((Short) instance).shortValue());
} else if (declaredClass == Integer.TYPE) { // int
out.writeInt(((Integer) instance).intValue());
} else if (declaredClass == Long.TYPE) { // long
out.writeLong(((Long) instance).longValue());
} else if (declaredClass == Float.TYPE) { // float
out.writeFloat(((Float) instance).floatValue());
} else if (declaredClass == Double.TYPE) { // double
out.writeDouble(((Double) instance).doubleValue());
} else if (declaredClass == Void.TYPE) { // void
} else {
throw new IllegalArgumentException("Not a primitive: " + declaredClass);
}
} else if (declaredClass.isEnum()) { // enum
UTF8.writeString(out, ((Enum) instance).name());
} else if (Writable.class.isAssignableFrom(declaredClass)) { // Writable
UTF8.writeString(out, instance.getClass().getName());
((Writable) instance).write(out);
} else {
throw new IOException("Can't write: " + instance + " as " + declaredClass);
}
}
private void serializeNode(DataOutput output, Node node) throws IOException {
int flags = 0;
if (node.left != null) {
flags |= Flags.HAS_LEFT;
}
if (node.right != null) {
flags |= Flags.HAS_RIGHT;
}
output.writeByte(flags);
output.writeByte(node.level);
output.writeLong(node.bits);
output.writeDouble(node.weightedCount);
}
@Override
public void write(DataOutput output) throws IOException {
Bytes.writeByteArray(output, name.getBytes());
WritableUtils.writeVInt(output, type.ordinal());
WritableUtils.writeVLong(output, sequenceNumber);
output.writeLong(timeStamp);
Bytes.writeByteArray(
output, pkName == null ? ByteUtil.EMPTY_BYTE_ARRAY : Bytes.toBytes(pkName));
WritableUtils.writeVInt(output, allColumns.size());
for (int i = 0; i < allColumns.size(); i++) {
PColumn column = allColumns.get(i);
column.write(output);
}
stats.write(output);
}
public void writeTo(DataOutput out) throws Exception {
out.writeByte(type.ordinal());
// We can't use Util.writeObject since it's size is limited to 2^15-1
try {
if (object instanceof Streamable) {
out.writeShort(-1);
Util.writeGenericStreamable((Streamable) object, out);
} else {
byte[] bytes = Util.objectToByteBuffer(object);
out.writeInt(bytes.length);
out.write(bytes);
}
} catch (IOException e) {
throw e;
} catch (Exception e) {
throw new IOException("Exception encountered while serializing execution request", e);
}
out.writeLong(request);
}
@Override
public void writeTo(DataOutput out) throws Exception {
super.writeTo(out);
out.writeLong(threadId);
}
