Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

what is difference between int and intwritable?

1475

What is Apache Hadoop YARN?

1454

What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?

1112

What are channel selectors?

1029

What are the stable versions of Hadoop?

1017

Input Split & Record Reader and what they do?

1030

what is the default replication factor in HDFS?

1016

What is the core of the job in MapReduce framework?

848

How indexing is done in HDFS?

1086

How Pig differs from MapReduce?

797

Why are the number of splits equal to the number of maps?

960

What are the Data types in Pig?

913

What are the two main components of ResourceManager?

1164

MapReduce Types and Formats and Setting up a Hadoop Cluster?

904

How will you make changes to the default configuration files?

961

Un-Answered Questions { Big Data }

Explain textloader function?

649

Clarify how job tracker schedules an assignment?

419

Explain what happens in textinformat ?

748

State some advantages of impala?

How many layers of Hadoop components are supported by Apache Ambari and what are they?

Does google use hadoop?

672

What is python spark?

330

Are results returned as they become available, or all at once when a query completes?

What is a speculative execution in Apache Hadoop MapReduce?

793

How to change the replication factor of data which is already stored in HDFS?

Why we use intwritable instead of int? Why we use longwritable instead of long?

483

What is the use of having Filters in Apache Pig ?

703

What is the role of the offset.

513

What is the need for custom serde?

732

What is partitioning?

462

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