NRG (2.11): Ignore vote requests if leader heard more recently than election timeout #5331
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This is actually a safeguard that the Raft paper describes as a way of avoiding network partitioned nodes from coming back up with a high term number and causing the existing leader to step down unnecessarily. In the time that the isolated node was isolated, it is likely to have sat timing out constantly and increasing its term number with each new election attempt.
Section 6 "Cluster membership changes":
TODO: the
TestNRGSimpleElection
test fails with this, need to investigate if this has changed step-down behaviour.Signed-off-by: Neil Twigg neil@nats.io