The calculated KPIs and related metadata are delivered in KPIOutput UDRs.
The generation of this UDR type is triggered by the timestamp field of the incoming KDR UDRs.
When a timestamp value exceeds the upper limit of the current period by a configurable "delay", KPIAggregatedOutput UDRs are generated for the period, which is then considered closed. The delay is configured in the Spark application.
The length of a period for a KPI is defined by the window size that is set in the service model (kpi object). Calculated KPIs that belong to a closed period will be discarded.
The following fields are included in the KPIOutputUDRs:
Field | Type | Description |
|---|---|---|
| string | This field contains an instantiated path based on actual input data and the node path of the kpi object in the service model. Example:
The |
kpi | string | This field contains the name of the kpi object in the service model. |
node | string | This field contains the node path of the For the instantiated path, corresponding to actual values in the input, see |
outputTime | long | This field contains the system time (Unix time) when the KPIOutput UDR was generated. |
outputType | int |
When a KPI is configured to generate immediate alarms, the alarm output will be generated in a The latency of the alarm output depends on the duration of the Spark batch intervals. If a threshold is exceeded it will be detected after a batch process has finished. The default length of the batch intervals is 10 seconds but you can change this setting in the service configuration. |
periodEnd | long | This field contains the end time for the period, based on the incoming KDR UDR timestamps. |
| long | This field contains the start time for the period, based on the incoming |
| long | This field contains the number of KDR UDRs that were used for the KPI calculation. |
| string | This field contains the level name of threshold object in the service model. |
value | double | This field contains the result of the KPI calculation. |
windowSize | long | This field contains the length of the period. The period length is determined by |
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