Databricks Certified Data Engineer - Associate

Explanation

The correct answer is B because:

1. Requirement Analysis: The data engineer needs to run a new notebook prior to the original task. This means the new task must execute first, and then the original task should run.

2. Task Dependencies in Databricks Jobs: In Databricks, you can set up task dependencies where one task must complete before another can start. When you add a task as a dependency of another task, the dependent task will wait for the prerequisite task to complete.

3. Option B Analysis:

   • Create a new task in the existing Job (running the new notebook)
   • Add it as a dependency of the original task
   • This ensures the new task runs first, then the original task runs after it completes

4. Why Other Options Are Incorrect:

   • Option A: Cloning and updating the existing task would replace the original task, not add a new task before it.
   • Option C: Adding the original task as a dependency of the new task would make the original task run first, which is opposite of the requirement.
   • Option D: Creating a new job from scratch with concurrent tasks would run both tasks at the same time, not sequentially with the new task first.

5. Best Practice: This approach maintains the existing job structure while adding the necessary preprocessing step, which is efficient and maintains operational consistency.