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 to enable trash/recycle bin in hadoop?

776

What is small file problem in hadoop?

829

What are the default configuration files that are used in hadoop?

733

What exactly is hadoop?

730

Can we do online transactions(oltp) using hadoop?

711

Did you ever built a production process in hadoop ? If yes then what was the process when your hadoop job fails due to any reason?

738

What is output format in hadoop?

734

How to enable/configure the compression of map output data in hadoop?

827

What hadoop does in safe mode?

702

What is inputformat in hadoop?

799

Explain how input and output data format of the hadoop framework?

749

when hadoop enter in safe mode?

794

How to enable recycle bin or trash in hadoop?

736

Whats is distributed cache in hadoop?

717

what should be the ideal replication factor in hadoop?

697

Un-Answered Questions { Hadoop }

Does kafka use hdfs?

529

How to identify that given operation is transformation/action in your program?

303

What is the sequencefileinputformat in hadoop?

765

What is Distributed Cache in Hadoop?

501

What is pregel api?

319

Differentiate between GROUP and COGROUP operators?

675

What is the Use of Sqoop?

Are multiline comments supported in Hive?

3339

How is indexing done in HDFS?

Can you explain how you can use Apache Spark along with Hadoop?

323

Name a few import control commands. How can Sqoop handle large objects?

Is kafka a amqp?

561

Mention what daemons run on a master node and slave nodes?

511

Is Apache Spark a good fit for Reinforcement learning?

310

State syntax of the command that is used to drop a partition?

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