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 a IdentityMapper and IdentityReducer in MapReduce ?

945

Explain Working of MapReduce?

971

Write a Mapreduce Program for Character Count ?

1049

how to proceed to write your first mapreducer program?

1343

How to set the number of reducers?

1362

Developing a MapReduce Application?

966

Different ways of debugging a job in MapReduce?

1106

Explain the Reducer's reduce phase?

1054

Why do we use HDFS for applications having large data sets and not when there are lot of small files?

1 2770

What are the functions of NameNode?

1 1990

How to configure hadoop to reuse JVM for mappers?

1201

mapper or reducer?

995

How to resolve IOException: Cannot create directory

1015

Does Pig support multi-line commands?

897

How to change replication factor of files already stored in HDFS?

1003

Un-Answered Questions { Big Data }

Specify the partitions in hive?

660

Clarify what a task tracker is in hadoop?

427

What is the jobtracker?

633

What is Starvation scenario in spark streaming?

346

What is the Virtual Node in Cassandra ?

Give examples of the SerDe classes which hive uses to Serialize and Deserialize data?

700

What is atom in pig?

538

What are broker configs?

531

How is recovery achieved in Ambari?

What is the role of data transfer API in HCatalog?

What are the independent extensions that are contributed to the ambari codebase?

What happens when you issue a delete command in hbase?

166

what needs to be taken care while adding a Column?

107

Can we run Apache Spark without Hadoop?

306

Pig Features ?

612

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