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

What is the difference between coalesce and repartition in spark?

317

What does rdd mean?

314

How does groupbykey work in spark?

300

What is tungsten in spark?

393

What is the difference between dataframe and dataset in spark?

287

What is an accumulator in spark?

300

What is apache spark used for?

308

What is the difference between spark and scala?

354

What is accumulators and broadcast variables in spark?

328

Does spark run hadoop?

299

What is coalesce in spark sql?

311

What are the features of spark rdd?

287

What is cluster mode in spark?

319

What are shared variables in spark?

304

What is the future of apache spark?

279

Un-Answered Questions { Hadoop }

Can you define a checkpoint?

467

What is isr?

531

What is spark configuration?

339

Explain the maximum size of a message that can be received by the Kafka?

724

How to transfer data from Hive to HDFS?

What is spark technology?

298

Specify Cassandra’s importance on Facebook?

153

Name the languages which are supported by apache spark and which one is most popular?

279

Does Partitioner run in its own JVM or shares with another process?

706

How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?

604

What are the different modes in which PIG can run and explain those?

493

Mention what are the main components of cassandra data model?

What is rack awareness in hadoop?

487

What database are supported by Hive?

706

Explain about catalog configuration?

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