zhangsong reassigned KUDU-1721:

    Assignee: zhangsong

> 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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