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  1. Cassandra
  2. CASSANDRA-13338

JMX: EstimatedPartitionCount / SnapshotSize are expensive

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Normal
    • Resolution: Unresolved
    • Fix Version/s: None
    • Component/s: Legacy/Observability
    • Labels:
    • Complexity:
      Low Hanging Fruit

      Description

      EstimatedPartitionCount / EstimatedRowCount / SnapshotSize seem particularly expensive. For example on our system org.apache.cassandra.metrics:type=ColumnFamily,name=SnapshotsSize can take as much as half a second.

      All this cumulated means that export stats for all your tables (with metrics-graphite or jmx_exporter) is going to take quite some time.

      We should certainly try to find the most expensive end points and see if there is a way to cache some of the values.

      cc: Romain GERARD

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            • Assignee:
              Unassigned
              Reporter:
              iksaif Corentin Chary
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              • Created:
                Updated: