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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

What does jps command do in Hadoop?

 651

How to debug Hadoop code?

 535

Explain Hadoop streaming?

 476

What does hadoop-metrics.properties file do?

 529

How Hadoop’s CLASSPATH plays a vital role in starting or stopping in Hadoop daemons?

 422

What are the different commands used to startup and shutdown Hadoop daemons?

 527

What is configured in /etc/hosts and what is its role in setting Hadoop cluster?

 528

How is the splitting of file invoked in Hadoop framework?

 513

Is it possible to provide multiple input to Hadoop? If yes then how?

 502

Is it possible to have hadoop job output in multiple directories? If yes, how?

 452

Explain Hadoop Archives?

 535

Explain the Single point of Failure in Hadoop?

 477

Explain Erasure Coding in Hadoop?

 503

What is Disk Balancer in Hadoop?

 513

What happens if the number of reducers is 0 in Hadoop?

 481



Related Topics


Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1456

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

1006

What is Apache Hadoop? Why is Hadoop essential for every Big Data application?

907

What are the core components of Apache Hadoop?

784

What is the difference between Apache Hadoop and RDBMS?

807

How is security achieved in Apache Hadoop?

909

What is Apache Hadoop?

851

What is a “Distributed Cache” in Apache Hadoop?

777

What is the problem with small files in Apache Hadoop?

783

What is Rack Awareness in Apache Hadoop?

811

Explain Erasure Coding in Apache Hadoop?

751

What is Disk Balancer in Apache Hadoop?

889

What is a speculative execution in Apache Hadoop MapReduce?

793

What are the modes in which Apache Hadoop run?

800

What is Safemode in Apache Hadoop?

735