Question 140
An Eventstream transformation fails when upstream publishers begin sending a differently nested JSON payload. What should the engineer implement first to satisfy the stated need?
Explanation
Correct Answer
Transformations need field paths consistent with actual source messages.
Incorrect Answers
A missing field name cannot be resolved by the Spark analyzer.
KQL queries must reference fields that exist in the current table schema.
Breaking Delta schema changes require policy and external schema reconciliation.