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 kafka communicate with clients and servers?

495

What is log compaction?

499

Kafka has written in which languages?

506

What exactly kafka does?

447

What are consumers in kafka?

515

What does producer api in kafka?

456

What does consumer api in kafka?

478

How can you configur the log cleaner?

521

What are the core api’s of kafka?

473

How can you use streams api?

504

How can you create topic in kafka?

516

How can you send some messages in kafka?

472

What are broker configs?

489

What are quotas?

479

What are producers in kafka?

488

Un-Answered Questions { Hadoop }

How to change a number of mappers running on a slave in MapReduce?

759

Explain Spark map() transformation?

326

What is the difference between spark and scala?

338

How does an hadoop application look like or their basic components?

659

Explain the default level of parallelism in Apache Spark

303

What is inputsplit in hadoop? Explain.

729

How you can contact your client everyday ?

927

What is the key- value pair in Hadoop MapReduce?

638

Name the filter which accepts the page size as the parameter in hbase?

181

How can we create RDD in Apache Spark?

290

What happens when two users try to access to the same file in HDFS?

Why do the nodes are removed and added frequently in a hadoop cluster?

444

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

337

Explain the level of parallelism in Spark Streaming? Also, describe its need.

297

Hbase blocksize is configured on which level?

166

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