Cassandra
  1. Cassandra
  2. CASSANDRA-4038

Investigate improving the dynamic snitch with reservoir sampling

    Details

    • Type: Improvement Improvement
    • Status: Resolved
    • Priority: Major Major
    • Resolution: Fixed
    • Fix Version/s: 1.2.0 beta 1
    • Component/s: None
    • Labels:
      None

      Description

      Dsnitch's UPDATES_PER_INTERVAL and WINDOW_SIZE are chosen somewhat arbitrarily. A better fit may be something similar to Metric's ExponentiallyDecayingSample, where more recent information is weighted heavier than past information, and reservoir sampling would also be an efficient way of keeping a statistically significant sample rather than refusing updates after UPDATES_PER_INTERVAL and only keeping WINDOW_SIZE amount.

      1. CASSANDRA-4038.patch
        13 kB
        Pavel Yaskevich

        Activity

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          People

          • Assignee:
            Pavel Yaskevich
            Reporter:
            Brandon Williams
            Reviewer:
            Brandon Williams
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            Dates

            • Created:
              Updated:
              Resolved:

              Development