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    • wu-sheng's avatar
      Optimize metrics of minute dimensionality persistence, don't save metric of... · c0994eef
      wu-sheng 提交于
      Optimize metrics of minute dimensionality persistence, don't save metric of being default value. (#8066)
      
      Optimize metrics of minute dimensionality persistence.
      - The value of metrics, which has declaration of the default value and current value equals the default value logically, the whole row wouldn't be pushed into database.
      - Add self-observability `metrics_persistence_skipped` metric to measure the number of skipped metrics.
      - SLA(percent function), Apdex, AvgLong(MAL mostly) metrics are mostly optimized because of this. Such as a full-failing error(0% successful rate) and unhealthy(apdex=0) are not costing the storage.
      - Hour/Day dimensionalities metrics are not changed, as they cover long duration.
      - Fix `max` function in OAL doesn't support negative long.
      c0994eef