"Bela Ban" wrote : | What happens with asynchronous replication ? A committed TX will be sent asynchronously in a one-phase commit as a combined PREPARE/COMMIT to D. Does D queue these ? | | ANSWER: we don't need to queue them because they will get applied to A's state, and so we have them as part of A's state... | No, but just like 2PC messages, D needs to respond positively to 1PC prepare/commit messages so that the tx originator can complete the txs. After responding positively, D would discard the messages assuming that they will either be incorporated in A's state or be a part of the tx log A sends along with the state. "Bela Ban" wrote : | Idempotency: creation, deletion and moving of data/nodes is not imdempotent. Is idempotency required in this design ? | Need to think whether idempotency is still a requirement even after changes made in Orlando. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4135714#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...