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https://issues.apache.org/jira/browse/KUDU-1721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15715098#comment-15715098
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zhangsong commented on KUDU-1721:
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[~mpercy] sure, yes~
> Expose ability to force an unsafe Raft configuration change
> -----------------------------------------------------------
>
> Key: KUDU-1721
> URL: https://issues.apache.org/jira/browse/KUDU-1721
> Project: Kudu
> Issue Type: Bug
> Components: consensus
> Reporter: Mike Percy
> Assignee: zhangsong
>
> Add the ability to force an “unsafe” configuration change via RPC to the
> leader. Instead of specifying AddServer() or RemoveServer(), which enforce
> one-by-one configuration changes due to their inherent contract, we could
> specify an unsafe configuration change API for administrative / emergency
> cases only that the leader would process without going through the normal
> "one by one" safety checks required by the Raft dissertation config change
> protocol.
> The leader should still reject configuration changes in which is it not a
> member of the requested new configuration.
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