DEA-C01 AWS Glue Worker Types Practice Question
Network Topology
Refer to the exhibit. A data engineer sees this output from the AWS CLI for a failed Glue job. The job uses 10 workers of Standard type. What is the MOST appropriate action to resolve the OutOfMemoryError?
⚠ Common exam trap
Candidates often mistakenly think increasing MaxCapacity raises memory per worker, but when NumberOfWorkers is set, MaxCapacity only sets the maximum total DPU; the job still uses exactly the specified number of workers each with the default DPU for the worker type.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Change WorkerType to G.1X
The OutOfMemoryError occurs because each Standard worker has a memory limit of 4 GB. Increasing MaxCapacity to 20 does not increase memory per worker when NumberOfWorkers is explicitly set; it only increases the total DPU allocation but the job still uses 10 workers each with 1 DPU. The correct solution is to change the worker type to G.1X, which provides 2 DPUs (8 GB memory) per worker, effectively doubling the memory per worker and resolving the error. Option A (increase workers) adds parallelism but does not increase per-worker memory. Option B (reduce workers) decreases parallelism and may aggravate memory pressure. Option D (increase MaxCapacity) is ineffective when NumberOfWorkers is fixed.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Increase NumberOfWorkers to 20
Why it's wrong here
Increasing NumberOfWorkers adds more parallelism but does not increase memory per worker; the OutOfMemoryError persists.
- ✗
Reduce NumberOfWorkers to 5
Why it's wrong here
Reducing NumberOfWorkers decreases parallelism and reduces total memory, likely making the memory error worse.
- ✓
Change WorkerType to G.1X
Why this is correct
Correct. Changing WorkerType to G.1X doubles the memory per worker (from 4 GB to 8 GB), resolving the OutOfMemoryError.
- ✗
Increase MaxCapacity to 20
Why it's wrong here
Increasing MaxCapacity to 20 does not increase memory per worker when NumberOfWorkers is set to 10; it only sets a higher total DPU limit but the job still uses 10 workers each with 1 DPU.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DEA-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DEA-C01 exam.