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

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

How to change from su to cloudera?

669

Why password is needed in ssh localhost?

730

What happens to a namenode, when job tracker is down?

690

What does the command mapred.job.tracker do?

718

How to come out of the insert mode?

716

What is the full form of fsck?

665

Why do we need a password-less ssh in fully distributed environment?

676

Can you give us some more details about ssh communication between masters and the slaves?

650

Can you tell us more about ssh?

673

How does master slave architecture in the hadoop?

751

Explain the wordcount implementation via hadoop framework ?

673

What is hadoop framework?

662

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

625

What is a task instance in hadoop? Where does it run?

573

How to enable recycle bin in hadoop?

710

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Un-Answered Questions { Apache Hadoop }

Explain the wordcount implementation via hadoop framework ?

673

Explain what is sqoop in Hadoop ?

680

What are the default configuration files that are used in hadoop?

641

What is oozie in hadoop?

629

Explain the features of fully distributed mode?

577

Command to format the NameNode?

886

What is the problem with small files in Apache Hadoop?

726

What is a “Distributed Cache” in Apache Hadoop?

724

How can I restart namenode?

663

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

1021

Name the examples of some companies that are using hadoop structure?

637

What is a checkpoint?

921

What is your favourite tool in the hadoop ecosystem?

919

Which are the three main hdfs-site.xml properties?

613

Knox and Hadoop Development Tools?

877

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