Answer / Siddhartha Chaturvedi

Databricks is not a traditional relational database. However, it provides a managed service for Apache Cassandra and supports integrations with various other databases like PostgreSQL, MySQL, and SQL Server.

Explain various Apache Spark ecosystem components. In which scenarios can we use these components?

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Explain Accumulator in Spark?

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Define a worker node?

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Define "PageRank".

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What is the default level of parallelism in apache spark?

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Explain mappartitions() and mappartitionswithindex()?

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What is pair rdd?

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What are spark stages?

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Do we need hadoop for spark?

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Why is Transformation lazy in Spark?

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Explain about transformations and actions in the context of RDDs.

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Explain the operation reduce() in Spark?

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