[CONTROLLER-1935] Do not bump term on isolated Followers Created: 19/May/20  Updated: 25/May/20  Resolved: 25/May/20

Status: Resolved
Project: controller
Component/s: clustering
Affects Version/s: None
Fix Version/s: Sodium SR3, Magnesium SR2, 2.0.1

Type: Bug Priority: Medium
Reporter: Tomas Cere Assignee: Tomas Cere
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified


 Description   

When a follower gets into a state that its isolated(ie cannot reach either peer)
it starts bumping its term every election timeout. Once the cluster heals it
would then disrupt the cluster because it has a higher term then the healthy part.
We can avoid this by not triggering new elections on followers that cannot
reach other peers while they are unreachable.
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