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https://issues.apache.org/jira/browse/KUDU-1827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16905605#comment-16905605
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Andrew Wong commented on KUDU-1827:
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A "decommissioning" state would be similar to "maintenance mode" because in
both states, the tablet server should not be considered for the placement of
new replicas.
Unlike maintenance mode, it should be valid (perhaps even encouraged, a la
KUDU-2914) to move tablet replicas away from a tablet server that is being
decommissioned.
> Add capability and tool to gracefully decommission a tablet server
> ------------------------------------------------------------------
>
> Key: KUDU-1827
> URL: https://issues.apache.org/jira/browse/KUDU-1827
> Project: Kudu
> Issue Type: New Feature
> Components: consensus, ops-tooling, tablet
> Reporter: Mike Percy
> Priority: Major
> Labels: roadmap-candidate
>
> It would be useful to be able to decommission a tablet server gracefully, by
> taking it out of the candidate for getting new tablets and re-replicating its
> data to other servers before taking it out of tablet Raft configurations and
> shutting it down.
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