[jira] [Commented] (KUDU-2914) Rebalance tool support moving replicas from some specific tablet servers

["Adar Dembo (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KUDU-2914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16898428#comment-16898428 ] 

Adar Dembo commented on KUDU-2914:
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[~andrew.wong] has been working on a design for maintenance mode, which should also solve this problem. Could you take a look at KUDU-2069? I think Andrew will also share his design thoughts pretty soon.

> 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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