CountDownLatch txnRollbackLatch = new CountDownLatch(1);
final CountDownLatch memberRemovedLatch = new CountDownLatch(1);
context.beginTransaction();
final TransactionalQueue queue = context.getQueue(queueName);
queue.offer(randomString());
hz.getCluster().addMembershipListener(new MembershipAdapter() {
@Override
public void memberRemoved(MembershipEvent membershipEvent) {
memberRemovedLatch.countDown();
}