/** Write a UTF8 encoded string to out */
public static int writeString(DataOutput out, String s) throws IOException {
ByteBuffer bytes = encode(s);
int length = bytes.limit();
WritableUtils.writeVInt(out, length);
out.write(bytes.array(), 0, length);
return length;
}
/**
* serialize write this object to out length uses zero-compressed encoding
*
* @see Writable#write(DataOutput)
*/
public void write(DataOutput out) throws IOException {
WritableUtils.writeVInt(out, length);
out.write(bytes, 0, length);
}