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PYSPARK โ€ข LESSON 17

Reading CSV Files

How do we load raw CSV customer data from disk into a distributed DataFrame?

Beginnerโฑ 2 Minutesโญ 150 XP
๐Ÿค” THE QUESTION

How do we load raw CSV customer data from disk into a distributed DataFrame?

๐Ÿ’ก WHAT IS IT?

spark.read.csv() reads text files formatted with comma-separated values into a Spark DataFrame.

๐ŸŽฏ WHAT IS IT USED FOR?

Ingesting raw data feeds, customer exports, and legacy database dump files into the data lake.

๐Ÿ’ป EXAMPLE
customers_df = spark.read.csv("data/customers.csv")

๐ŸŽฏ Mission Objectives

Practice typing production-grade PySpark code for Reading CSV Files.

  • โœ“ Use spark.read.csv reader API
  • โœ“ Specify file path location
  • โœ“ Instantiate raw CSV DataFrame