Data Skew in PySpark Explained (Salting + Explode) 🔥 | Crack Data Engineering

Welcome to Crack Data Engineering 🚀

In this video, we explain one of the most important concepts in PySpark — Data Skew and how to handle it using Salting and Explode.

If your Spark job is running slow or one executor is overloaded, this video will help you understand the root cause and fix it using real examples.

🔥 What you will learn:
- What is Data Skew in PySpark
- Why it happens during Join and GroupBy
- What is Salting technique
- How explode() works in Spark
- Step-by-step solution with real-life examples

💡 This is a MUST-KNOW topic for Data Engineering interviews.

📌 Topics Covered:
PySpark, Data Skew, Salting in Spark, Explode function, Spark optimization, Big Data

👉 Perfect for:
- Data Engineer interview preparation
- PySpark beginners to intermediate
- Azure Databricks developers

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#PySpark #DataEngineering #BigData #Spark #Azure #Databricks #SQL #InterviewPreparation

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