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Apache Spark Shared Variables Explained | Broadcast vs Accumulator

In this tutorial, you'll learn everything you need to know about Shared Variables in Apache Spark, including:

✅ What are Shared Variables?
✅ Why regular variables don't work in Spark transformations
✅ How to use Broadcast Variables to share read-only data efficiently
✅ How to use Accumulators to aggregate data (like counters and sums)
✅ Comparison table: Broadcast vs Accumulator

Whether you're a beginner or brushing up on Spark concepts, this video breaks it down in a simple, visual, and easy-to-understand way.
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