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

Big Data Interview Questions

Questions Answers Views Company eMail

Which one is default InputFormat in Hadoop ?

1 2272

shouldn't DFS be able to handle large volumes of data already?

1025

What is Apache Pig?

780

what is a datanode?

885

How does NameNode tackle DataNode failures?

1110

What is InputSplit and RecordReader?

879

What is the purpose of dfsadmin tool?

1200

How can you connect an application

984

What are combiners? When should I use a combiner in my MapReduce Job?

875

how is a file of the size 1 GB uncompressed

878

Is map like a pointer?

879

What is the default replication factor?

948

What should be the ideal replication factor in Hadoop Cluster?

2 2995

How can one increase replication factor to a desired value in Hadoop?

1085

In Map Reduce why map write output to Local Disk instead of HDFS?

876

Un-Answered Questions { Big Data }

How does hdfs ensure information integrity of data blocks squares kept in hdfs?

Explain the use of tasktracker in the hadoop cluster?

605

What are the role of kafka producer api plays?

469

Define data lake?

515

What is HBase?

359

How to use 'foreach' operation in pig scripts?

525

Which spark library allows reliable file sharing at memory speed across different cluster frameworks?

261

What is the use of exists command?

234

Can we have different replication factor of the existing files in hdfs?

What is a Hive variable? What for we use it?

757

What is an "RDD Lineage"?

282

How is security achieved in Hadoop?

482

Explain map-only job?

496

How the HDFS Blocks are replicated?

909

What is a “Distributed Cache” in Apache Hadoop?

725

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