Uploaded image for project: 'Cassandra'
  1. Cassandra
  2. CASSANDRA-11994

Expose metrics via CQL interface

    XMLWordPrintableJSON

Details

    • Normal

    Description

      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

      Attachments

        Issue Links

          Activity

            People

              mmuzaf Maxim Muzafarov
              pmcfadin Patrick McFadin
              Maxim Muzafarov
              Votes:
              1 Vote for this issue
              Watchers:
              10 Start watching this issue

              Dates

                Created:
                Updated: