Is hadoop mandatory for spark?

295

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What is map in spark?

345

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Is spark written in java?

326

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How do I start a spark cluster?

320

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Does spark sql use hive?

295

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What is the default spark executor memory?

292

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What is the difference between coalesce and repartition in spark?

333

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What does rdd mean?

333

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How does groupbykey work in spark?

311

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What is tungsten in spark?

425

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What is the difference between dataframe and dataset in spark?

304

---

What is an accumulator in spark?

316

---

What is apache spark used for?

326

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What is the difference between spark and scala?

370

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What is accumulators and broadcast variables in spark?

339

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