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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

Give examples of some companies that are using Hadoop structure?

 398

Which modes can Hadoop be run in? List a few features for each mode?

 436

What does the file hadoop-metrics.properties do?

 450

Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?

 431

How will you write a custom partitioner for a Hadoop job?

 414

What are 'slaves' and 'masters' in Hadoop?

 384

What is the basic difference between traditional RDBMS and Hadoop?

 411

Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?

 402

How does speculative execution work in Hadoop?

 404

What is High Availability feature in Hadoop2?

 408

How many datanodes can run on a single Hadoop cluster?

 412

Give a brief overview of Hadoop history?

 387

How can you set an arbitrary number of mappers to be created for a job in Hadoop?

 420

How many job tracker processes can run on a single Hadoop cluster?

 445

What are some of the characteristics of Hadoop framework?

 409



Related Topics


Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1417

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

961

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

850

What are the core components of Apache Hadoop?

718

What is the difference between Apache Hadoop and RDBMS?

743

How is security achieved in Apache Hadoop?

836

What is Apache Hadoop?

800

What is a “Distributed Cache” in Apache Hadoop?

725

What is the problem with small files in Apache Hadoop?

729

What is Rack Awareness in Apache Hadoop?

750

Explain Erasure Coding in Apache Hadoop?

693

What is Disk Balancer in Apache Hadoop?

802

What is a speculative execution in Apache Hadoop MapReduce?

739

What are the modes in which Apache Hadoop run?

747

What is Safemode in Apache Hadoop?

684