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 scala spark?

312

How can I speed up my spark?

285

Can aluminum cause a spark?

330

What language is apache spark?

311

What is difference between scala and spark?

331

What is apache spark sql?

311

What is spark reducebykey?

293

Do I need scala for spark?

311

Is spark built on top of hadoop?

329

What exactly is apache spark?

309

Where is spark rdd?

280

What is spark yarn executor memoryoverhead?

374

Is apache spark worth learning?

320

What is spark mapvalues?

300

Why is spark fast?

303

Un-Answered Questions { Hadoop }

What is difference between flume and sqoop?

200

Explain sortbykey() operation?

304

What is the function of consistency cqlsh command in Cassandra?

What is spark application?

380

What is off heap memory in spark?

326

Explain different execution modes available in Pig?

828

Explain about the core components of Flume?

How many types of ambari repositories are available?

What is the difference between a node, a cluster, and data centre?

265

Are there any problems which can only be solved by MapReduce and cannot be solved by PIG? In which kind of scenarios MR jobs will be more useful than PIG?

825

Do we need to install spark in all nodes?

285

how would you modify that solution to only count the number of unique words in all the documents?

1014

What is Cassandra Query Language?

Do we need to install scala for spark?

325

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

1726

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