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?

508

What are the Features of Hadoop?

511

Compare Hadoop and RDBMS?

410

What are the modes in which Hadoop run?

504

What are the features of Standalone (local) mode?

596

What are the features of Pseudo mode?

503

What are the features of Fully-Distributed mode?

492

What are configuration files in Hadoop?

521

What are the limitations of Hadoop?

570

Compare Hadoop 2 and Hadoop 3?

423

Explain Data Locality in Hadoop?

536

What is the problem with small files in Hadoop?

526

How is security achieved in Hadoop?

523

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

695

What is throughput in Hadoop?

534

Un-Answered Questions { Hadoop }

Name different types of the data model?

Why Ambari?

200

What are configuration files in Hadoop?

521

What is session in Cassandra?

157

What do you mean by column family in Cassandra?

How would you check whether your NameNode is working or not?

420

MapReduce Types and Formats and Setting up a Hadoop Cluster?

905

What are the various programming languages supported by Spark?

355

Can we do real-time processing using spark sql?

310

How do I download and install spark?

297

What is a block and block scanner in HDFS?

1030

What is the difference between spark and python?

309

Can you change the block size of hdfs files?

How does inputsplit in mapreduce determines the record boundaries correctly?

647

What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?

722

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