Question 280
A subscription billing service receives order events on an external event bus. After configuring Preserve streaming checkpoints and committed sink state, the engineer must validate: The pipeline must avoid recomputing a costly historical topic replay on every restart. What evidence is decisive?
Explanation
Correct Answer
The query resumes after the most recently committed message offset directly measures whether Preserve streaming checkpoints and committed sink state achieved the requirement “The pipeline must avoid recomputing a costly historical topic replay on every restart.” It checks the operating result rather than just a configured resource name.
Incorrect Answers
The bronze table retains payload, timestamps and source offset metadata pertains to a different control (Write append-only raw events with source metadata into Delta bronze storage) and a different need (The consumer must retain a durable bronze record of all accepted messages). It cannot establish that Preserve streaming checkpoints and committed sink state met the stated goal.
That observation is a valid indicator for “Multiple event schemas coexist on one topic and must be decoded safely” when using Select the schema using an event type or schema identifier and apply controlled parsing. The scenario instead tests “The pipeline must avoid recomputing a costly historical topic replay on every restart”; the relevant result is The query resumes after the most recently committed message offset.
This signal belongs to the adjacent case “A producer emits duplicate messages with stable business event IDs,” whose remedy is Deduplicate on the stable event ID with suitable bounded state. The observed result for the present requirement is The query resumes after the most recently committed message offset.