Require a current-term entry for leader commit

Review the independently proposed patch below, including its unchanged callers. A majority acknowledgement of an older-term entry alone must not advance leader commit. A replicated current-term entry may commit its whole preceding prefix.

Review focus: Consensus log transitions

src/services/leader_commit.go

BeforeProposed

+1−1

1212 count++

1313 }

1414 }

15 if count > size/2 {

15 if count > size/2 && node.Log[index-1].Term == node.Term {

1616 node.Commit = index

1717 Apply(node)

1818 return

Your review

0 / 10,000 characters · A verdict needs supporting evidence.

30 more characters to give a verdict