Kaijie Chen created RATIS-1818:
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Summary: Make StartLeaderElection idempotent
Key: RATIS-1818
URL: https://issues.apache.org/jira/browse/RATIS-1818
Project: Ratis
Issue Type: Sub-task
Reporter: Kaijie Chen
Assignee: Kaijie Chen
Currently, it is possible for a leader at {{term x}} to send
{{StartLeaderElection}} twice to a follower, making the follower become {{term
x + 2}}.
We can make StartLeaderElection idempotent by including a term in
{{StartLeaderElectionRequest}}. And the handler should ignore the
{{StartLeaderElectionRequest}} from lower term.
(Actually every request proto should include a senders term)
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