Apache Hadoop Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

What is a block and block scanner in HDFS?

1030

What is compute and Storage nodes?

1024

how would you modify that solution to only count the number of unique words in all the documents?

973

How can you overwrite the replication factors in HDFS?

1247

What are the modules that constitute the Apache Hadoop 2.0 framework?

1005

Knox and Hadoop Development Tools?

926

In which location Name Node stores its Metadata and why?

1393

Is a job split into maps?

1036

What are different hdfs dfs shell commands to perform copy operation?

1060

If a data Node is full how it's identified?

937

What are the site-specific configuration files in Hadoop?

1091

On what basis data will be stored on a rack?

1139

How is HDFS fault tolerant?

1035

How to Administering Hadoop?

900

What are the main components of a Hadoop Application?

1038

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Un-Answered Questions { Apache Hadoop }

What is safe mode in Hadoop?

960

What are different types of filesystem?

1140

What is a Record Reader in hadoop?

957

What is oozie in hadoop?

672

What are the two main components of ResourceManager?

1164

What is the default replication factor?

988

What is the best hardware configuration to run Hadoop?

1624

when hadoop enter in safe mode?

744

Explain the difference between NameNode

941

What does ‘jps’ command do?

694

how to share the metastore within multiple users?

918

Which are the two types of 'writes' in HDFS?

1219

What is a block and block scanner in HDFS?

1030

What do you know about keyvaluetextinputformat?

600

What is Hadoop serialization?

697

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