⚡️ Learn Spark in 45 Seconds – Short & Sharp from pudhuData ⚡️

📌 What is .show() in Apache Spark?
The `.show()` method in Spark is used to *display the contents of a DataFrame* in a tabular format. It’s especially useful for quickly previewing data during development or debugging.

🧪 Syntax:
dataFrame.show()

📊 Example:
val empDF = spark.read.option("header", "true").csv("employees.csv")
empDF.show()

💡 Tips:
By default, `.show()` displays 20 rows and truncates long columns. Use `.show(50, false)` to show 50 rows without truncation.
Ideal for checking data quality, nulls, and schema conformity before transformations.
Avoid using `.show()` in production pipelines—it's meant for dev/interactive sessions.

📚 Official Docs:
https://spark.apache.org/docs/latest/api/s...

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