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https://issues.apache.org/jira/browse/CASSANDRA-10245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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C. Scott Andreas updated CASSANDRA-10245:
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Component/s: Observability
> Provide after the fact visibility into the reliability of the environment C*
> operates in
> ----------------------------------------------------------------------------------------
>
> Key: CASSANDRA-10245
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10245
> Project: Cassandra
> Issue Type: New Feature
> Components: Observability
> Reporter: Ariel Weisberg
> Priority: Major
> Fix For: 4.x
>
>
> I think that by default databases should not be completely dependent on
> operator provided tools for monitoring node and network health.
> The database should be able to detect and report on several dimensions of
> performance in its environment, and more specifically report on deviations
> from acceptable performance.
> * Node wide pauses
> * JVM wide pauses
> * Latency, and roundtrip time to all endpoints
> * Block device IO latency
> If flight recorder were available for use in production I would say as a
> start just turn that on, add jHiccup (inside and outside the server process),
> and a daemon inside the server to measure network performance between
> endpoints.
> FR is not available (requires a license in production) so instead focus on
> adding instrumentation for the most useful facets of flight recorder in
> diagnosing performance issues. I think we can get pretty far because what we
> need to do is not quite as undirected as the exploration FR and JMC
> facilitate.
> Until we dial in how we measure and how to signal without false positives I
> would expect this kind of logging to be in the background for post-hoc
> analysis.
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