-Stream Analytics derives the start time from the query specification. However, because the input event broker is only indexed by arrival time, the system has to translate the starting event time to arrival time. The system can start processing events from that point in the input event broker. With the early arriving window limit, the translation is straightforward. It’s starting event time minus the 5-minute early arriving window. This calculation also means that the system drops all events that are seen having event time 5 minutes greater than arrival time. (add link to metrics https://docs.microsoft.com/en-us/azure/stream-analytics/stream-analytics-monitoring) Early input events metric is incrimented when the events are dropped.
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