7. First Spark Job (PySpark) on a Small CSV
7.1 Runtime Options (Honest)
Why. Tutorials assume a cluster you do not have.
What. Options: local PySpark install, Docker image, or a vendor notebook (Databricks community/trial — check current terms). This draft shows code shape only.
Beginner-honest Spark
We show what Spark is and a tiny local PySpark-style sample. We do not claim you have a live multi-node cluster in this draft. Databricks/Fabric chapters stay overview + first clicks, not production ops.