Which metric should you monitor?

A company uses Azure Stream Analytics to monitor devices.

The company plans to double the number of devices that are monitored.

You need to monitor a Stream Analytics job to ensure that there are enough processing resources to handle the additional load.

Which metric should you monitor?
A . Early Input Events
B. Late Input Events
C. Watermark delay
D. Input Deserialization Errors

Answer: A

Explanation:

There are a number of resource constraints that can cause the streaming pipeline to slow down.

The watermark delay metric can rise due to:

✑ Not enough processing resources in Stream Analytics to handle the volume of input events.

✑ Not enough throughput within the input event brokers, so they are throttled.

✑ Output sinks are not provisioned with enough capacity, so they are throttled. The possible solutions vary widely based on the flavor of output service being used.

Reference: https://docs.microsoft.com/en-us/azure/stream-analytics/stream-analytics-time-handling