Why is transformation lazy operation in Apache Spark RDD? How is it useful?

287

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Explain fullOuterJoin() operation in Apache Spark?

418

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How many partitions are created by default in Apache Spark RDD?

305

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Explain coalesce operation in Apache Spark?

319

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Explain the level of parallelism in spark streaming?

289

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Explain join() operation in Apache Spark?

354

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How to process data using Transformation operation in Spark?

305

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What is Resilient Distributed Dataset (RDD) in Apache Spark? How does it make spark operator rich?

279

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What are the differences between Caching and Persistence method in Apache Spark?

313

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Explain the operation reduce() in Spark?

286

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Explain the lookup() operation in Spark?

229

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Explain the processing speed difference between Hadoop and Apache Spark?

288

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Explain the operation transformation and action in Apache Spark RDD?

323

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Explain Spark join() operation?

285

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How is RDD in Apache Spark different from Distributed Storage Management?

342

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