PDE Maintaining and Automating Data Workloads Practice Question
You need to schedule a Dataproc Spark job to run at 2 AM every day, and upon completion, trigger a BigQuery load job. Which Cloud Composer operator should you use to run the Spark job?
⚠ Common exam trap
Watch out — candidates often confuse operators that manage cluster lifecycle (like DataprocClusterCreateOperator) with operators that submit jobs, or they mistakenly think DataflowPythonOperator can run Spark jobs because both are data processing frameworks.
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
✓
DataprocSubmitJobOperator
The DataprocSubmitJobOperator is specifically designed to submit a job (e.g., a Spark job) to an existing Dataproc cluster. In this scenario, you need to run a Spark job on a scheduled basis, and Cloud Composer (Airflow) provides this operator to submit the job to Dataproc. After the Spark job completes, you can chain a BigQuery load operator to trigger the load, matching the requirement exactly.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
DataflowPythonOperator
Why it's wrong here
This operator runs Dataflow pipelines, not Dataproc.
- ✗
BigQueryOperator
Why it's wrong here
This operator runs BigQuery jobs, not Dataproc Spark.
- ✗
DataprocClusterCreateOperator
Why it's wrong here
This operator creates a cluster, not submit a job.
- ✓
DataprocSubmitJobOperator
Why this is correct
This operator submits a job (e.g., Spark, PySpark) to an existing Dataproc cluster.
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