If there is certain data that we want to use again and again in different transformations, what should improve the performance?

280

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Explain partitions?

268

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Explain api create or replace tempview()?

325

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Define parquet file format? How to convert data to parquet format?

312

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Explain mappartitions() and mappartitionswithindex()?

413

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Explain pipe() operation. How it writes the result to the standard output?

265

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Explain transformation in rdd. How is lazy evaluation helpful in reducing the complexity of the system?

338

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How to identify that given operation is transformation/action in your program?

264

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explain the use of blinkdb?

276

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How do you parse data in xml? Which kind of class do you use with java to parse data?

326

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Explain parquet file?

274

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What is lazy evaluation and how is it useful?

281

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How is transformation on rdd different from action?

334

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What is a dataset? What are its advantages over dataframe and rdd?

285

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What is pagerank?

272

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