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https://issues.apache.org/jira/browse/KAFKA-19489?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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José Armando García Sancio resolved KAFKA-19489.
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Resolution: Fixed
> 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
> Assignee: Kevin Wu
> Priority: Major
> Fix For: 4.2.0
>
>
> The storage tool currently allows for setting both the static voters config
> ({{{}controller.quorum.voters{}}}) and attempting to format with one of
> {{--standalone, --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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