c311062476
Today we have DiscoveryDisruptionIT tests for checking that discovery can still work once the cluster has formed, even if the cluster is misconfigured and only has a single master-eligible node in its unicast hosts list. In fact with Zen2 we can go one better: we do not need any nodes in the unicast hosts list, because nodes also use the contents of the last-committed cluster state for discovery. Additionally, the DiscoveryDisruptionIT tests were failing due to the overenthusiastic fault-detection timeouts. This commit replaces these tests with deterministic `CoordinatorTests` that verify the same behaviour. It also removes some duplication by extracting a test method called `testFollowerCheckerAfterMasterReelection()` Closes #37687 |
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