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https://issues.apache.org/jira/browse/KUDU-2914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16898637#comment-16898637
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YifanZhang commented on KUDU-2914:
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The Maintenance mode refered in KUDU-2069 seems to be inapplicable to the use
case when we want to remove some tservers from cluster (maybe just for saving
resources or replacing these servers with new servers), these servers will not
restart anymore. It would be better to migrate replicas on these servers to
other servers in advance, instead of wating for electing new replicas.
> Rebalance tool support moving replicas from some specific tablet servers
> ------------------------------------------------------------------------
>
> Key: KUDU-2914
> URL: https://issues.apache.org/jira/browse/KUDU-2914
> Project: Kudu
> Issue Type: Improvement
> Components: CLI
> Reporter: YifanZhang
> Priority: Minor
>
> When we need to stop/upgrade some tablet servers in a kudu cluster, these
> tservers would become unavailable and tablets on these servers would be
> unhealthy in a period of time. In order to ensure the high availability of
> the cluster, it's better to move all replicas on these tservers to other
> tservers in a cluster, then stop or upgrade tservers. This can be achieved by
> rebalance tool to support specifying 'blacklist_tservers'.
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