title: Paxos questions: if proposer down, what happened?
body: <p>I'm going through kinds of scenarios which the basic Paxos algorithm could get agreement of final result. There's one case I can't explain the result.</p>
  
  <p>There's two proposed P1 P2, three acceptor A1 A2 A3. P1 would propose value u, P2 would propose value v.</p>
  
  <p><strong>1.</strong> P1(send id n) finish the prepare step, receive all promise from A1 A2 A3, then in A1 A2 A3 all store n as id.</p>
  
  <p><strong>2.</strong> P2(send id n+1) then A1 A2 A3 store n+1 as id</p>
  
  <p><strong>3.</strong> P2 down.</p>
  
  <p><strong>4.</strong> P1 send accept request with (n, u) to A1 A2 A3, of course A1 A2 A3 would refuse the request, unfortunately at the same time P2 already down.</p>
  
  <p>Such proposer down case, what would we do next? another new round of Paxos?</p>