DataOutputStream dataOut = new DataOutputStream(bytesOut);
orig.write(dataOut);
LuceneIndexInputSplit deSerialized = new LuceneIndexInputSplit();
deSerialized.readFields(new DataInputStream((new ByteArrayInputStream(bytesOut.toByteArray()))));
assertEquals(orig.getIndexDirs(), deSerialized.getIndexDirs());
assertEquals(orig.getLength(), deSerialized.getLength());
assertEquals(0, orig.compareTo(deSerialized));