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 do I download and install spark?

319

What is meant by spark in big data?

303

What is shuffle spill in spark?

294

Is spark a special attack?

307

How does rdd work in spark?

311

Which serialization libraries are supported in spark?

347

What is project tungsten in spark?

312

How does broadcast join work in spark?

319

How does apache spark engine work?

332

What do you use spark for?

375

How does executor work in spark?

331

What is in memory processing in spark?

290

Do we need to install spark in all nodes?

285

What is difference between hive and spark?

283

What is spark vcores?

293

Un-Answered Questions { Hadoop }

Define the difference between hive and hbase?

172

Give examples of some companies that are using Hadoop structure?

473

What is the use of context object?

504

Mention what happens if the preferred replica is not in the ISR?

595

What database does spark use?

288

List some commonly used Machine Learning Algorithm Apache Spark?

299

Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?

465

What is the difference between like and rlike operators in hive?

792

What are the most common InputFormats in Hadoop?

644

What is apache spark and what is it used for?

344

What are the optimization techniques in spark?

299

What is the difference between apache mahout and spark mllib ?

What are apache tajo sql functions?

What is Apache Hadoop YARN?

1494

What do you understand by cassandra?

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