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Cloudera CDP-3002 Exam Syllabus Topics:

Cloudera CDP Data Engineer - Certification Sample Questions:

Question 1

When monitoring a PySpark application in Kubernetes, you notice that Executor pods are frequently restarting. What is the most likely cause of this issue?

A. Executor pods are not configured to restart upon failure.
B. Dynamic resource allocation is disabled.
C. Insufficient memory allocation for Executor pods.
D. Too many tasks assigned to each Executor.

Question 2

You've discovered that a production Iceberg table has several corrupted data files. Which of the following actions could help address this issue?

A. Restore the table to a previous snapshot using Iceberg's time travel feature.
B. Run the VACUUM procedure on the Iceberg table.
C. Apply Iceberg's REMOVE ORPHAN FILES procedure.
D. Drop and recreate the Iceberg table from scratch.

Question 3

In a PySpark application, you're writing a function that reads a CSV file and shows the first few rows. Which of the following code snippets correctly accomplishes this task?

A. Option D
B. Option A
C. Option B
D. Option C

Question 4

You want to write the results of a Spark DataFrame back to a Hive table. How can you achieve this efficiently?

A. Implement a custom function to write individual rows to the Hive table
B. Use the DataFrame.write.saveAsTable("table_name") method
C. Use the hiveContext.sql("lNSERT INTO table_name SELECT FROM df') method
D. Convert the DataFrame to a temporary table and then use HiveQL operations

Question 5

You're building an Airflow ETL pipeline that involves data validation checks. How can you integrate these checks into the pipeline and handle potential failures?

A. Configure the DAG to send email notifications upon validation failures for manual intervention.
B. Leverage XCom to share the validation results with downstream tasks for further processing.
C. Implement the validation checks within custom Python operators and raise exceptions upon failure, triggering downstream tasks to handle the error.
D. Use the FailoverOperator to automatically skip downstream tasks if the validation check fails.

Solutions: