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?

827

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

731

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?

734

What is output format in hadoop?

732

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

822

What hadoop does in safe mode?

702

What is inputformat in hadoop?

798

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?

735

Whats is distributed cache in hadoop?

715

what should be the ideal replication factor in hadoop?

697

Un-Answered Questions { Hadoop }

What is Sqoop Import? Explain its purpose?

Explain jmx concerning hbse

181

What are the different pig data types?

784

Is scala required for spark?

332

What is the difference between Hadoop and Traditional RDBMS?

960

Describe REVERSE function in Hive with example?

758

Use of version command in hadoop sqoop?

What is setmaster in spark?

328

What is full form of rdd?

402

Explain HBase Meta Table?

179

Distinguish HDFS Block and Input Unit?

Differentiate Reducer and Combiner in Hadoop MapReduce?

725

What is the maximum size of string data type supported by Hive?

826

What do we mean by Paraquet?

461

Which java class handles the output record encoding into files which result from Hive queries?

710

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