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 functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?

832

Is it necessary to know java to learn hadoop?

701

Explain the use of .mecia class?

820

What is the sequencefileinputformat in hadoop?

762

What is the difference between hadoop and other data processing tools?

728

Which data storage components are used by hadoop?

697

Give the use of the bootstrap panel.

707

What are the functionalities of jobtracker?

712

Is it possible to provide multiple inputs to hadoop? If yes, explain.

709

What are the network requirements for using hadoop?

722

What is the relation between job and task in hadoop?

705

What do you know by storage and compute node?

727

What is the purpose of button groups?

804

Name the various types of lists supported by bootstrap.

723

How many instances of a jobtracker run on hadoop cluster?

684

Un-Answered Questions { Hadoop }

Explain how to write the output into a file using storm?

593

What are broadcast variables in Apache Spark? Why do we need them?

331

Is hadoop a memory?

739

What is spark application?

380

Rack awareness of Namenode?

911

What is HDFS block size and what did you chose in your project?

1015

What is bag data type in Pig?

719

What is Output Format in MapReduce?

734

Where is spark used?

378

What is spark code?

327

What is the difference between Hadoop and RDBMS?

679

What is Apache Pig?

864

What is column store db? Explain with an example.

What is pipelined rdd?

267

What is difference between split and block in hadoop?

1437

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