What is map in spark?

194

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Is spark written in java?

204

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How do I start a spark cluster?

181

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Does spark sql use hive?

188

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What is the default spark executor memory?

190

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What is the difference between coalesce and repartition in spark?

196

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What does rdd mean?

204

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How does groupbykey work in spark?

192

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What is tungsten in spark?

241

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What is the difference between dataframe and dataset in spark?

187

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What is an accumulator in spark?

200

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What is apache spark used for?

179

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What is the difference between spark and scala?

211

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What is accumulators and broadcast variables in spark?

212

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Does spark run hadoop?

202

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