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Exam Certified Data Engineer Professional topic 1 question 179 discussion

Actual exam question from Databricks's Certified Data Engineer Professional
Question #: 179
Topic #: 1
[All Certified Data Engineer Professional Questions]

A Databricks job has been configured with three tasks, each of which is a Databricks notebook. Task A does not depend on other tasks. Tasks B and C run in parallel, with each having a serial dependency on task A.

What will be the resulting state if tasks A and B complete successfully but task C fails during a scheduled run?

  • A. All logic expressed in the notebook associated with tasks A and B will have been successfully completed; some operations in task C may have completed successfully.
  • B. Unless all tasks complete successfully, no changes will be committed to the Lakehouse; because task C failed, all commits will be rolled back automatically.
  • C. Because all tasks are managed as a dependency graph, no changes will be committed to the Lakehouse until all tasks have successfully been completed.
  • D. All logic expressed in the notebook associated with tasks A and B will have been successfully completed; any changes made in task C will be rolled back due to task failure.
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Suggested Answer: A 🗳️
by imatheushenrique at May 31, 2024, 11:34 p.m.

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m79590530
1 month ago
Selected Answer: A
Each Notebook or Task consists of multiple commands and actions performed by them. Each action may be on the data in the Delta Lake where ACID transactions take place and fully rollback certain data manipulations if some of them fail but the Notebooks/Tasks in the Job themselves will not completely fail or rollback. Therefore Answer A correctly describes the result considering the dependencies configures between the Notebooks/Tasks as described in the question.
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imatheushenrique
5 months, 3 weeks ago
A: A. All logic expressed in the notebook associated with tasks A and B will have been successfully completed; some operations in task C may have completed successfully. Because this type of orchestration indicates a Fan-Out.
upvoted 1 times
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