List out the various advantages of dataframe over rdd in apache spark?

285

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What is map in apache spark?

256

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Write the command to start and stop the spark in an interactive shell?

251

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Define various running modes of apache spark?

265

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What are the ways to run spark over hadoop?

288

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What is catalyst query optimizer in apache spark?

276

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What are the various types of shared variable in apache spark?

264

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Define the common faults of the developer while using apache spark?

271

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What is the use of spark driver, where it gets executed on the cluster?

325

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What is speculative execution in spark?

303

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Explain write ahead log(journaling) in spark?

251

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Explain values() operation in apache spark?

468

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Define the level of parallelism and its need in spark streaming?

374

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Define sparksession in apache spark? Why is it needed?

259

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Describe different transformations in dstream in apache spark streaming?

282

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