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RAN-DBDEA-00267
Ranvier · DBDEA

Exam DBDEA Topics: troubleshooting Difficulty: easy

A data engineer is new to the Databricks platform and wants to study a slow PySpark notebook run in the Spark UI. The engineer wants to start from the actions the notebook triggered, open the slowest one, and then see how many tasks each of its stages ran and how long every task took. Which navigation matches how the Spark UI organizes this information?

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  1. A. The Jobs tab lists the triggered actions; a job page shows its stages; the Stages view lists each stage's tasks with durations and I/O metrics
  2. B. The Storage tab reports how long every task ran inside each stage, next to the cached tables that those tasks read
  3. C. The Executors tab displays the execution plan of each action, including stage boundaries and per-task assignments
  4. D. The Jobs and Stages tabs are the same view, with Stages only adding extra filters by duration and status
Reveal answer

Correct answer: The Jobs tab lists the triggered actions; a job page shows its stages; the Stages view lists each stage's tasks with durations and I/O metrics

Reference: https://docs.databricks.com/aws/en/optimizations/spark-ui-guide/

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Official Answer (A): The Jobs tab lists the triggered actions; a job page shows its stages; the Stages view lists each stage's tasks with durations and I/O metrics

Ranvier · DBDEA

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