Answer / Husnain Ali

Spark applications are created by writing code using one of the supported programming languages like Scala, Python, or Java. The code is executed on a Spark cluster to process data.

What is Apache Spark? What is the reason behind the evolution of this framework?

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What is faster than apache spark?

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What is worker node in Apache Spark cluster?

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Can you explain broadcast variables?

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Explain the process to trigger automatic clean-up in Spark to manage accumulated metadata.

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What do you understand by SchemaRDD?

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What are the types of transformation in RDD in Apache Spark?

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What are the roles and responsibilities of worker nodes in the Apache Spark cluster? Is Worker Node in Spark is same as Slave Node?

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What is hadoop spark?

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What is row rdd in spark?

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Which one is better hadoop or spark?

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When to use spark sql?

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