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https://issues.apache.org/jira/browse/RATIS-2296?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz-wo Sze reassigned RATIS-2296:
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Assignee: (was: Tsz-wo Sze)
> Disallow setting Raft group size to an even number
> --------------------------------------------------
>
> Key: RATIS-2296
> URL: https://issues.apache.org/jira/browse/RATIS-2296
> Project: Ratis
> Issue Type: Improvement
> Components: raft-group
> Reporter: Tsz-wo Sze
> Priority: Major
>
> Setting the Raft group size to an even number for HA does not make sense. As
> an example, support group size is 4. It only can tolerate 1 failure, which
> is the same as group size 3. However, It is harder to get the majority
> comparing to group size 3 -- it requires 3 instead of 2.
> We should just fail it when setting a Raft group to an even number. This is
> a configurable feature
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