问题
I set the event retention time to 1 day (the lowest value and think it's default) in my Azure IoT Hub.
I can see from usage donut diagram that each day it resets to 0% usage and 0 message.
However, when I start my Stream Analytics with custom start time (say 2 mths ago), why would I still be able to pick up older events/messages?
Anyone notice this behavior too?
Thanks!
来源：https://stackoverflow.com/questions/45590000/azure-iot-hub-event-endpoint-retention-time-not-working