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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

What does jps command do in Hadoop?

 592

How to debug Hadoop code?

 476

Explain Hadoop streaming?

 440

What does hadoop-metrics.properties file do?

 488

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

 384

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

 478

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

 464

How is the splitting of file invoked in Hadoop framework?

 472

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

 465

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

 422

Explain Hadoop Archives?

 487

Explain the Single point of Failure in Hadoop?

 437

Explain Erasure Coding in Hadoop?

 463

What is Disk Balancer in Hadoop?

 453

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

 457



Related Topics


Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1416

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

959

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

846

What are the core components of Apache Hadoop?

713

What is the difference between Apache Hadoop and RDBMS?

737

How is security achieved in Apache Hadoop?

834

What is Apache Hadoop?

800

What is a “Distributed Cache” in Apache Hadoop?

724

What is the problem with small files in Apache Hadoop?

725

What is Rack Awareness in Apache Hadoop?

746

Explain Erasure Coding in Apache Hadoop?

692

What is Disk Balancer in Apache Hadoop?

798

What is a speculative execution in Apache Hadoop MapReduce?

739

What are the modes in which Apache Hadoop run?

744

What is Safemode in Apache Hadoop?

677