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https://issues.apache.org/jira/browse/KUDU-1516?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Will Berkeley reassigned KUDU-1516:
-----------------------------------
Assignee: Will Berkeley
> ksck should check for more raft-related status issues
> -----------------------------------------------------
>
> Key: KUDU-1516
> URL: https://issues.apache.org/jira/browse/KUDU-1516
> Project: Kudu
> Issue Type: Improvement
> Components: consensus, ksck, supportability
> Affects Versions: 0.9.1
> Reporter: Todd Lipcon
> Assignee: Will Berkeley
> Priority: Critical
>
> We currently have a test cluster where one or more tablets have gotten
> under-replicated (1 replica remaining out of 3) and weren't able to
> re-replicate in time. 'ksck' still reports that the table is healthy though,
> and just reports two down tablet servers. It seems there is a lot of room for
> improvement:
> - for each tablet, check that at least a majority of its replicas are on live
> tablet servers, and those tablet servers consider the replica to be in
> RUNNING state
> - some basic tablet "health checks" like asking followers if they have
> recently successfully heard from leader?
> - perhaps a canary request pushed to each tablet? (eg an empty write or no_op)
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