Is hadoop mandatory for spark?

259

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What is map in spark?

297

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Is spark written in java?

294

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How do I start a spark cluster?

279

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Does spark sql use hive?

255

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What is the default spark executor memory?

254

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What is the difference between coalesce and repartition in spark?

301

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What does rdd mean?

290

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How does groupbykey work in spark?

275

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What is tungsten in spark?

379

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What is the difference between dataframe and dataset in spark?

267

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What is an accumulator in spark?

273

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What is apache spark used for?

278

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What is the difference between spark and scala?

333

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What is accumulators and broadcast variables in spark?

310

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