Iterator<Entry<byte[], byte[]>> iter = db.prefixLookup(3, "Key3".getBytes(), null).get();
assertFalse(iter.hasNext());
ir = db.createInsertGroup();
ir.addDelete(0, "Key1".getBytes());
ir.addInsert(1, "Key2".getBytes(), "Value2.2".getBytes());
ir.addInsert(2, "Key3".getBytes(), "Value2.3".getBytes());
db.insert(ir, null).get();
database.getCheckpointer().checkpoint();