final DummyTransactionManager transactionManager = (DummyTransactionManager) tm(0);
transactionManager.begin();
operation.perform(cache(0), key);
final DummyTransaction transaction = transactionManager.getTransaction();
transaction.runPrepare();
assertEquals("Wrong transaction status before killing backup owner.",
Status.STATUS_PREPARED, transaction.getStatus());
//now, we kill cache(1). the transaction is prepared in cache(1) and it should be forward to cache(3)
killMember(1);