@Override
  public void readFields(DataInput in) throws IOException {
    super.readFields(in);
    split.readFields(in);
  }
Wraps RangeInputSplit into a FileSplit so Hadoop won't complain when it tries to make its own
Path.

<p>
If the {@link RangeInputSplit} is used directly, it will hit a branch of code in
{@link HiveInputSplit} which generates an invalid Path. Wrap it ourselves so that it doesn't
error
accumulo-handler/src/java/org/apache/hadoop/hive/accumulo/mr/HiveAccumuloSplit.java