What is map in spark?

329

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Is spark written in java?

313

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How do I start a spark cluster?

298

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Does spark sql use hive?

273

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What is the default spark executor memory?

281

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What is the difference between coalesce and repartition in spark?

315

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What does rdd mean?

314

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How does groupbykey work in spark?

299

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What is tungsten in spark?

393

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What is the difference between dataframe and dataset in spark?

284

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What is an accumulator in spark?

296

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What is apache spark used for?

304

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What is the difference between spark and scala?

354

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What is accumulators and broadcast variables in spark?

328

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Does spark run hadoop?

299

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