Exam DP-300 topic 3 question 16 discussion

Actual exam question from Microsoft's DP-300

Question #: 16
Topic #: 3

Your 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. Input Deserialization Errors
B. Late Input Events
C. Early Input Events
D. Watermark delay

Show Suggested Answer

Suggested Answer: D 🗳️
The Watermark delay metric is computed as the wall clock time of the processing node minus the largest watermark it has seen so far.
The watermark delay metric can rise due to:
1. Not enough processing resources in Stream Analytics to handle the volume of input events.
2. Not enough throughput within the input event brokers, so they are throttled.
3. Output sinks are not provisioned with enough capacity, so they are throttled.
Reference:
https://docs.microsoft.com/en-us/azure/stream-analytics/stream-analytics-time-handling

by o2091 at Nov. 13, 2021, 10:33 p.m.