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 are the core components of Hadoop?

557

What are the Features of Hadoop?

566

Compare Hadoop and RDBMS?

455

What are the modes in which Hadoop run?

554

What are the features of Standalone (local) mode?

648

What are the features of Pseudo mode?

550

What are the features of Fully-Distributed mode?

553

What are configuration files in Hadoop?

562

What are the limitations of Hadoop?

618

Compare Hadoop 2 and Hadoop 3?

464

Explain Data Locality in Hadoop?

580

What is the problem with small files in Hadoop?

569

How is security achieved in Hadoop?

559

Why does one remove or add nodes in a Hadoop cluster frequently?

737

What is throughput in Hadoop?

578

Un-Answered Questions { Hadoop }

Tell any two feature Flume?

What are the scalar data types in Pig?

637

What is spark shuffle?

280

What is Erasure Coding in Hadoop?

548

What is the difference between TextinputFormat and KeyValueTextInputFormat class?

546

What is Derby database?

958

what needs to be taken care while adding a Column?

107

What is the difference between rdd and dataframe?

349

What is the use of flume in hadoop?

What are the transformations in spark?

302

Why do we need Pig?

869

What is a local repository and when it is useful while using ambari environment?

What are possible types of Channel Selectors?

105

How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?

726

What is job tracker role in hadoop?

525

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