long expected = 0L;
long actual = 0L;
cl = BlockIndex.class;
expected = ClassSize.estimateBase(cl, false);
BlockIndex bi = new BlockIndex(Bytes.BYTES_RAWCOMPARATOR);
actual = bi.heapSize();
//Since the arrays in BlockIndex(byte [][] blockKeys, long [] blockOffsets,
//int [] blockDataSizes) are all null they are not going to show up in the
//HeapSize calculation, so need to remove those array costs from ecpected.
expected -= ClassSize.align(3 * ClassSize.ARRAY);
if(expected != actual) {