Uploaded image for project: 'Kafka'
  1. Kafka
  2. KAFKA-203

Improve Kafka internal metrics

    XMLWordPrintableJSON

Details

    • New Feature
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 0.8.0
    • 0.8.0
    • core

    Description

      Currently metrics in kafka are using old-school JMX directly. This makes adding metrics a pain. It would be good to do one of the following:
      1. Convert to Coda Hale's metrics package (https://github.com/codahale/metrics)
      2. Write a simple metrics package

      The new metrics package should make metrics easier to add and work with and package up the common logic of keeping windowed gauges, histograms, counters, etc. JMX should be just one output of this.

      The advantage of the Coda Hale package is that it exists so we don't need to write it. The downsides are (1) introduces another client dependency which causes conflicts, and (2) seems a bit heavy on design. The good news is that the metrics-core package doesn't seem to bring in a lot of dependencies which is nice, though the scala wrapper seems to want scala 2.9. I am also a little skeptical of the approach for histograms--it does sampling instead of bucketing though that may be okay.

      Attachments

        1. kafka-203_v1.patch
          94 kB
          Jun Rao
        2. kafka-203_v2.patch
          123 kB
          Jun Rao

        Issue Links

          Activity

            People

              junrao Jun Rao
              jkreps Jay Kreps
              Votes:
              1 Vote for this issue
              Watchers:
              8 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: