Hadoop Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)

Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)

Hadoop Interview Questions

Questions Answers Views Company eMail

How can I improve my spark performance?

286

What is apache spark architecture?

317

Why spark is faster than hive?

303

What happens if rdd partition is lost due to worker node failure?

454

What is pair rdd in spark?

287

What is difference between cache and persist in spark?

275

Is bigger than spark driver maxresultsize?

296

Does spark use java?

323

How do you process big data with spark?

279

What is a spark shuffle?

331

Why do we need apache spark?

271

How do I optimize my spark code?

306

What is the difference between client mode and cluster mode in spark?

320

What are transformations in spark?

307

What is driver and executor in spark?

313

Un-Answered Questions { Hadoop }

Why spark is faster than hive?

303

Can you explain hadoop streaming?

420

What is spark table?

255

What is the primary purpose of flume in the hadoop architecture?

875

Why Hive is not suitable for OLTP systems?

734

Explain the lookup() operation in Spark?

231

What is full form of rdd?

388

What is executor cores in spark?

295

Can you explain spark core?

264

What is a kafka cluster?

542

What are the main configuration parameters in a MapReduce program?

634

What is the usage of "cqlsh-version" command?

148

Are there any special requirements for namenode?

425

What is the method to create a data frame?

317

Will various customers write into an hdfs record simultaneously?

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