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https://issues.apache.org/jira/browse/CASSANDRA-19033?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jon Haddad updated CASSANDRA-19033:
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Summary: Add virtual table with GC pause history (was: Add virtual tables
with GC pause history)
> Add virtual table with GC pause history
> ---------------------------------------
>
> Key: CASSANDRA-19033
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19033
> Project: Cassandra
> Issue Type: New Feature
> Components: Feature/Virtual Tables
> Reporter: Jon Haddad
> Priority: Normal
>
> We should be able to view GC pause history in a virtual table.
> I think the best approach here is to read from the GC logs. The format was
> unified in Java 9, and we've dropped older JVM support so I think this is
> reasonable. The benefits of using logs are that we can preserve it across
> restarts and we enable GC logs by default.
> The downside is people might not have GC logs configured and it seems weird
> that a feature would just stop working because logs aren't enabled. Maybe
> that's OK if we call it out, or error if people try to read from it and the
> logs aren't enabled. I think if someone disables -Xlog:gc then an error
> might be fine as I don't expect it to happen often. I think I lean towards
> this from a usability perspective, and Microsoft has a
> [project|https://github.com/microsoft/gctoolkit] to parse them, but I haven't
> used it so I'm not sure if it's suitable for us.
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