@Override
    public void readFields(DataInput in) throws IOException {
      super.readFields(in);
      serializedScanToken = Bytes.readByteArray(in);
      locations = new String[in.readInt()];
      for (int i = 0; i < locations.length; i++) {
        byte[] str = Bytes.readByteArray(in);
        locations[i] = Bytes.getString(str);
      }
    }
Tablet server locations which host the tablet to be scanned.
kudu-handler/src/java/org/apache/hadoop/hive/kudu/KuduInputFormat.java