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 2345

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

1067

What is Apache Pig?

816

what is a datanode?

923

How does NameNode tackle DataNode failures?

1168

What is InputSplit and RecordReader?

959

What is the purpose of dfsadmin tool?

1246

How can you connect an application

1028

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

901

how is a file of the size 1 GB uncompressed

931

Is map like a pointer?

917

What is the default replication factor?

988

What should be the ideal replication factor in Hadoop Cluster?

2 3108

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

1120

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

903

Un-Answered Questions { Big Data }

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

271

In mapreduce what is a scarce system resource? Explain?

669

What are the basic commands in Apache Sqoop and its uses?

Is it necessary to write a mapreduce job in java?

627

What is Disk Balancer in Apache Hadoop?

889

CONCAT function in Hive with Example?

809

How Big Data can help increase the revenue of the businesses?

578

How many types of ambari repositories are available?

What is shuffleing in mapreduce?

648

Is Hive useful when making data warehouse applications?

738

How to copy file from HDFS to local?

Is Hive supports Temporary Tables?

1009

How are file systems checked in hdfs?

When you should use Hbase?

909

Why Hadoop performs replication, although it results in data redundancy?

1280

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