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https://issues.apache.org/jira/browse/KUDU-2286?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Wong updated KUDU-2286:
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Labels: 1.8 (was: )
> Redistribute tablet data when removing directories
> --------------------------------------------------
>
> Key: KUDU-2286
> URL: https://issues.apache.org/jira/browse/KUDU-2286
> Project: Kudu
> Issue Type: Improvement
> Components: fs, tablet
> Reporter: Andrew Wong
> Priority: Major
> Labels: 1.8
>
> Today, the `update_dirs` tool will allow the removal of a directory, even if
> tablet data exists on it. For tablet servers, this means upon the next
> startup, those tablets will be re-replicated to other servers. For masters,
> this means the node will crash.
> While a well-provisioned Kudu cluster should be able to handle both of these
> cases, it would be nice to redistribute the tablet's data locally to avoid
> either outcome. This entails moving the data blocks from the removed
> directory, and rewriting the tablet metadata (which keeps a record of the
> data directories across which the tablet's data is stored) to exclude the
> removed directory.
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