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What are broadcast variables in Apache Spark? Why do we need them?
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Answer Posted / Chandra Gupta Maurya
Broadcast variables in Apache Spark are used to broadcast large datasets across all executors and worker nodes in a cluster. They allow large data sets to be shared efficiently among tasks without replicating the entire dataset on each machine.nBroadcast variables are useful for scenarios where many tasks need to access the same data but do not modify it, such as passing parameters to UDFs (User Defined Functions) or distributing large matrices in machine learning algorithms.
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