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Why is there a need for broadcast variables when working with Apache Spark?

Question Posted / irshad ahmad


Why is there a need for broadcast variables when working with Apache Spark?..

Answer / Amit Jeet Kumar

Broadcast variables are useful in Apache Spark when a large dataset needs to be accessed by many tasks. By broadcasting the data, it reduces network communication overhead since only the changes in the dataset are sent instead of the entire dataset.

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