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https://issues.apache.org/jira/browse/CASSANDRA-11994?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maxim Muzafarov reassigned CASSANDRA-11994:
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Assignee: Maxim Muzafarov
> Expose metrics via CQL interface
> --------------------------------
>
> Key: CASSANDRA-11994
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11994
> Project: Cassandra
> Issue Type: Bug
> Components: Legacy/Observability, Observability/Metrics
> Reporter: Patrick McFadin
> Assignee: Maxim Muzafarov
> Priority: Normal
> Labels: cql, operations
>
> This is an attempt to revive the concept introduced in CASSANDRA-3527.
> Instead of specifically targeting JMX metrics, simplify by just exposing
> metrics into CQL tables as a dynamic view.
> Exposing these metrics will give operators vital insight without resorting to
> anything more than what is installed with Apache Cassandra.
> The scope of these tickets is only for reading metrics with a SELECT command.
> The actual data model can be discussed in the comments below.
> Some basic requirements I would propose:
> - SELECT syntax should allow for single node or cluster wide statistics
> - Aggregations should be supported (min, max, avg)
> - Inside metric tables, future column additions should be automatically
> created when new metrics are added to a family
> - Large schema changes such as deletes should be postponed to a major
> release
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