[v23.1.x] Fixed Raft voter priority override with single replica topics #11544
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Redpanda Raft implementation exposes an API allowing to override a voter priority. This is used by the drain manager when a node is in maintenance mode. In current implementation when the only voter is in maintenance mode the Raft group is not able to elect a leader as the reported priority it to low (the priority override in maintenance is set to 0). Fixed Raft implementation to make sure that it prioritize an availability over the user priority preference. If a node is the only voter the priority override is ignored. Fixes: redpanda-data/cloudv2#6174 Signed-off-by: Michal Maslanka <michal@redpanda.com> (cherry picked from commit 1b21f83)
Signed-off-by: Michal Maslanka <michal@redpanda.com> (cherry picked from commit 04191fb)
Since now leader is elected earlier there is a race condition in updating Health Report when a single node starts. Made the timeout longer to allow the `feature_manager` to retry activating cluster version. Signed-off-by: Michal Maslanka <michal@redpanda.com> (cherry picked from commit 5ce6ef8)
ztlpn
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Jun 22, 2023
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Backport of PR #10800