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https://issues.apache.org/jira/browse/KUDU-2069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Wong reassigned KUDU-2069:
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Assignee: Andrew Wong
> Add a maintenance mode
> ----------------------
>
> Key: KUDU-2069
> URL: https://issues.apache.org/jira/browse/KUDU-2069
> Project: Kudu
> Issue Type: Bug
> Reporter: Jean-Daniel Cryans
> Assignee: Andrew Wong
> Priority: Major
>
> Adding a maintenance mode in Kudu would mainly prevent replicas from getting
> evicted while the cluster remains in that mode. We might also consider
> preventing table create/alter/delete.
> Maintenance mode is a good thing for two use cases:
> - When starting a cluster, some nodes might take longer than others to come
> back. We shouldn't kick their replicas out.
> - When nodes need to be taken out for a known short period of time, say to
> change a disk or perform an OS upgrade, we shouldn't necessarily evict all
> its replicas. Right now, taking a node out for more than 5 minutes is
> equivalent to wiping it out since it will delete all its replicas when coming
> back. In fact, wiping it out might even be preferable since it cleans up the
> data dirs.
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