Exam Professional-Data-Engineer Topic 4 Question 220 Discussion

Actual exam question for Google's Professional-Data-Engineer exam
Question #: 220
Topic #: 4
You've migrated a Hadoop job from an on-prem cluster to dataproc and GCS. Your Spark job is a complicated analytical workload that consists of many shuffing operations and initial data are parquet files (on average 200-400 MB size each). You see some degradation in performance after the migration to Dataproc, so you'd like to optimize for it. You need to keep in mind that your organization is very cost-sensitive, so you'd like to continue using Dataproc on preemptibles (with 2 non-preemptible workers only) for this workload.
What should you do?

Suggested Answer: A Vote an answer

by Everley at Jun 18, 2025, 08:54 AM

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