Answer / Tejpal Sagar

A Spark Application is a collection of one or more components that work together to process data using Apache Spark. It can be written in Scala, Java, Python, or R.

What are the features of apache spark?

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Do we need to install spark in all nodes?

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Explain about the different types of trformations on dstreams?

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What is lazy evaluation in Spark?

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How will you calculate the number of executors required to do real-time processing using Apache Spark? What factors need to be considered for deciding on the number of nodes for real-time processing?

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Is it possible to use Apache Spark for accessing and analyzing data stored in Cassandra databases?

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Is spark written in java?

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Does spark require hadoop?

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Is apache spark a framework?

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How can you minimize data transfers when working with Spark?

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Explain Spark Executor

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Is spark a special attack?

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