Error and exit on validator configs that contain only LOW
validators
#4528
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Closes #4526
This change raises an error when a node is a validator and all of the validators in its config (including itself) are marked
LOW
quality. This represents a misconfiguration becauseLOW
quality validators cannot win leader election. If every validator isLOW
quality, then there are no eligible nomination leaders and nomination will stall.Checklist
clang-format
v8.0.0 (viamake format
or the Visual Studio extension)