Kevin Wu created KAFKA-19489:
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Summary: storage tool should check controller.quorum.voters is not
set alongside a dynamic quorum flag when formatting
Key: KAFKA-19489
URL: https://issues.apache.org/jira/browse/KAFKA-19489
Project: Kafka
Issue Type: Bug
Reporter: Kevin Wu
The storage tool allows for setting both the static voters config
({{{}controller.quorum.voters{}}}) and attempting to format with one of
{{--standalone, --initial-controllers, --no-initial-controllers}} on a
controller, but instead it should throw an exception. This is because setting
{{controller.quorum.voters}} itself is formatting the voter set.
Setting {{controller.quorum.voters}} while trying to format with a
{{--standalone}} and {{--no-initial-controllers}} setup can result in 2 voter
sets. For example, in a three node setup, the two nodes that formatted with
{{--no-initial-controllers}} could form quorum with each other since they have
the static voter set, and the {{--standalone}} node would ignore the config and
read the voter set of itself from its log, forming its own quorum of 1.
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