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https://issues.apache.org/jira/browse/KUDU-3512?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexey Serbin updated KUDU-3512:
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Labels: newbie (was: )
> Make 'kudu cluster ksck' warn about tables with RF=1
> ----------------------------------------------------
>
> Key: KUDU-3512
> URL: https://issues.apache.org/jira/browse/KUDU-3512
> Project: Kudu
> Issue Type: Improvement
> Components: CLI
> Reporter: Alexey Serbin
> Priority: Major
> Labels: newbie
>
> Sometimes Kudu tables are created with RF=1 (replication factor), meaning
> there is only one replica of each tablet in the Kudu cluster. While it might
> be the desired outcome in most cases where the replication factor for the
> table is specified explicitly in the client request, sometimes it's not, and
> people might be unpleasantly surprised in the future when they find that
> their data is gone when just one tablet server out of many in their cluster
> had a disk (or other hardware) failure.
> It would be nice to make the {{kudu cluster ksck}} CLI to output a warning if
> detecting such tables in a Kudu cluster. Maybe, there should be a flag for
> the {{kudu cluster ksck}} CLI tool to specify the default replication factor
> for a table, and by default it should be set to the same as the master's
> [default_num_replicas|https://kudu.apache.org/docs/configuration_reference.html#kudu-master_default_num_replicas]
> flag.
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