cf = cfs.getColumnFamily(QueryFilter.getSliceFilter(dk(key), CFNAME, b(17), b(18), false, Integer.MAX_VALUE, System.currentTimeMillis()));
rt = rangeTombstones(cf);
assertEquals(1, rt.size());
ColumnSlice[] slices = new ColumnSlice[]{new ColumnSlice( b(1), b(10)), new ColumnSlice( b(16), b(20))};
IDiskAtomFilter sqf = new SliceQueryFilter(slices, false, Integer.MAX_VALUE);
cf = cfs.getColumnFamily( new QueryFilter(dk(key), CFNAME, sqf, System.currentTimeMillis()) );
rt = rangeTombstones(cf);
assertEquals(2, rt.size());
}