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?

985

What is compute and Storage nodes?

990

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

935

How can you overwrite the replication factors in HDFS?

1183

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

963

Knox and Hadoop Development Tools?

879

In which location Name Node stores its Metadata and why?

1356

Is a job split into maps?

996

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

1015

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

888

What are the site-specific configuration files in Hadoop?

1021

On what basis data will be stored on a rack?

1088

How is HDFS fault tolerant?

996

How to Administering Hadoop?

869

What are the main components of a Hadoop Application?

994

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Un-Answered Questions { Apache Hadoop }

What is your favourite tool in the hadoop ecosystem?

927

On What concept the Hadoop framework works?

1163

What is partioner in hadoop? Where does it run,mapper or reducer?

630

What are channel selectors?

961

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

1068

What is 'Key value pair' in HDFS?

907

What are the stable versions of Hadoop?

959

What stored in HDFS?

871

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

888

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

1174

Explain the wordcount implementation via hadoop framework ?

679

Is hadoop required for data science?

634

Define streaming?

615

Define fault tolerance?

610

What is inputformat in hadoop?

702

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