Alexey Serbin has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/9627 )

Change subject: WIP: KUDU-2342. consensus: use tighter bound for non-voter 
promotion
......................................................................


Patch Set 1:

(6 comments)

http://gerrit.cloudera.org:8080/#/c/9627/1/src/kudu/consensus/consensus_queue.cc
File src/kudu/consensus/consensus_queue.cc:

http://gerrit.cloudera.org:8080/#/c/9627/1/src/kudu/consensus/consensus_queue.cc@913
PS1, Line 913: TrackedPeer* peer,
parameter ordering nit: maybe, place this 'out' parameter after the 'in' ones?


http://gerrit.cloudera.org:8080/#/c/9627/1/src/kudu/consensus/consensus_queue.cc@958
PS1, Line 958:                                        const ConsensusStatusPB& 
status) {
nit: maybe, add a DCHECK() to make sure the necessary lock are held while 
entering this method?


http://gerrit.cloudera.org:8080/#/c/9627/1/src/kudu/consensus/consensus_queue.cc@959
PS1, Line 959:   if (queue_state_.mode == PeerMessageQueue::LEADER &&
             :       peer->last_exchange_status == PeerStatus::OK) {
readability nit: maybe, return right away if the condition yields false?

if (queue_state_.mode != PeerMessageQueue::LEADER || peer->last_exchange_status 
!= PeerStatus::OK) {
  return;
}

...


http://gerrit.cloudera.org:8080/#/c/9627/1/src/kudu/consensus/consensus_queue.cc@974
PS1, Line 974: prev_peer_state.last_received.index()
should we ignore this if it's -1?


http://gerrit.cloudera.org:8080/#/c/9627/1/src/kudu/consensus/consensus_queue.cc@976
PS1, Line 976: status.last_received_current_leader()
Sometimes I see OpId index equal to -1.  Should we ignore such cases as well?


http://gerrit.cloudera.org:8080/#/c/9627/1/src/kudu/consensus/consensus_queue.cc@977
PS1, Line 977: last_batch_size
Is this safe enough if the peer was receiving heartbeats from some strayed 
leader?



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Iff517f01d6dc25eb15d01593dd57b7dc0dd25956
Gerrit-Change-Number: 9627
Gerrit-PatchSet: 1
Gerrit-Owner: Mike Percy <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Comment-Date: Wed, 14 Mar 2018 20:13:50 +0000
Gerrit-HasComments: Yes

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