What is DataFrames?

367

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Discuss writeahead logging in Apache Spark Streaming?

322

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How can data transfer be minimized when working with Apache Spark?

293

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What do you mean by Speculative execution in Apache Spark?

295

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Explain about the different cluster managers in Apache Spark

327

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Explain Spark Executor

282

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Explain the level of parallelism in Spark Streaming? Also, describe its need.

325

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What are the various storages from which Spark can read data?

340

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What is a Sparse Vector?

330

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What is the difference between Caching and Persistence in Apache Spark?

321

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What are the roles of the file system in any framework?

315

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Name some companies that are already using Spark Streaming?

266

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What is Spark Streaming?

295

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What does it mean by Columnar Storage Format?

299

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What is Spark Dataset?

327

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