Local Master Configuration

How do we configure PySpark to utilize all available local CPU cores during development?

Beginner⏱ 2 Minutes⭐ 130 XP

🤔 THE QUESTION

How do we configure PySpark to utilize all available local CPU cores during development?

💡 WHAT IS IT?

The master('local[*]') setting instructs Spark to run locally utilizing all available CPU threads without a remote cluster.

🎯 WHAT IS IT USED FOR?

Local unit testing, development sandboxes, and debugging before deploying to distributed YARN/Kubernetes clusters.

💻 EXAMPLE

spark = SparkSession.builder \
    .master("local[*]") \
    .appName("SalesAnalytics") \
    .getOrCreate()

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