ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
DataInput in = new ObjectInputStream(bais);
WikipediaInputSplit split2 = new WikipediaInputSplit();
split2.readFields(in);
Assert.assertTrue(bais.available() == 0);
bais.close();
Assert.assertTrue(split.getPartition() == split2.getPartition());