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

Explain Erasure Coding in Apache Hadoop?

751

What is Disk Balancer in Apache Hadoop?

889

What is a speculative execution in Apache Hadoop MapReduce?

793

What are the modes in which Apache Hadoop run?

800

What is Safemode in Apache Hadoop?

735

What are the different methods to run Spark over Apache Hadoop?

718

Why is Apache Spark faster than Apache Hadoop?

842

What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?

489

What are the configuration files in Hadoop?

541

Compare Apache Hadoop and Apache Spark?

445

What are the different modes in which we can configure/install Hadoop?

542

Explain how Hadoop cluster hardware planning and provisioning is done?

555

How to create a user in Hadoop?

489

What are the major differences between Hadoop 2 and Hadoop 3?

480

What is single node cluster in Hadoop? for what all purposes Hadoop run on a single node cluster?

540

Un-Answered Questions { Hadoop }

Double type in Hive - Important points?

678

Enlist the several components in Kafka?

653

What is structured and unstructured data?

446

What are the differences between Caching and Persistence method in Apache Spark?

313

What is apache spark good for?

282

Can I do insert … select * into a partitioned table?

Is it necessary to install spark on all the nodes of a YARN cluster while running Apache Spark on YARN ?

344

What is a Cluster, Node and Key space in Cassandra ?

199

What is the use of ZooKeeper?

228

Can we use Ambari Python Client to use of Ambari API’s?

What is high availability in hadoop?

674

When we send a data to a node, do we allow settling in time, before sending another data to that node?

487

Why spark is faster than hadoop?

248

Differentiate between PigLatin and Hive?

689

What is structured data?

650

For More Un-Answered { Hadoop } Questions Click Here