You work for MDFT Pro, a well-known training agency that processes real-time student activity data. Claire, a Real-Time Analytics Engineer at MDFT Pro, manages an eventstream called StudentActivityStream that captures student quiz submissions, video completions, and forum interactions from the learning management system. The eventstream includes several transformations to enrich the data, filter out test accounts, and calculate engagement scores before routing the data to a KQL database and Power BI reports. Recently, Claire discovered that one of the transformations in StudentActivityStream is failing intermittently, causing some student activities to be lost. After reviewing the detailed error messages and timestamps in the runtime logs, she now needs to understand the scope of the problem by determining the total number of errors that have occurred. This aggregate count will help her assess whether the issue is a rare anomaly or a systemic problem that requires immediate attention. The total error count will also be useful for tracking improvements after implementing fixes.
What should Claire use to find the total number of errors?
Choose the correct answer from the options below.
Explanations for each answer: