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?

466

What are the Features of Hadoop?

474

Compare Hadoop and RDBMS?

391

What are the modes in which Hadoop run?

466

What are the features of Standalone (local) mode?

554

What are the features of Pseudo mode?

473

What are the features of Fully-Distributed mode?

465

What are configuration files in Hadoop?

479

What are the limitations of Hadoop?

524

Compare Hadoop 2 and Hadoop 3?

393

Explain Data Locality in Hadoop?

520

What is the problem with small files in Hadoop?

499

How is security achieved in Hadoop?

484

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

658

What is throughput in Hadoop?

501

Un-Answered Questions { Hadoop }

Types of Data Flow in Flume?

111

How is rdd fault?

268

Do we need scala for spark?

294

Cassandra is written in which language?

Compare Hadoop and RDBMS?

391

Is java required for spark?

275

What is apache spark architecture?

305

Explain the tajo architecture?

Which query language is used in Cassandra database?

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

721

What is the use of spark in big data?

326

Is spark an etl?

280

what is the Hadoop MapReduce APIs contract for a key and value class?

638

Main Components of Hadoop?

730

How data or a file is written into hdfs?

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