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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?

 472

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

 500

What does the file hadoop-metrics.properties do?

 528

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?

 490

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

 495

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

 473

What is the basic difference between traditional RDBMS and Hadoop?

 475

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

 465

How does speculative execution work in Hadoop?

 480

What is High Availability feature in Hadoop2?

 475

How many datanodes can run on a single Hadoop cluster?

 481

Give a brief overview of Hadoop history?

 460

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

 496

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

 512

What are some of the characteristics of Hadoop framework?

 485



Related Topics


Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1492

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

1042

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

956

What are the core components of Apache Hadoop?

816

What is the difference between Apache Hadoop and RDBMS?

841

How is security achieved in Apache Hadoop?

952

What is Apache Hadoop?

892

What is a “Distributed Cache” in Apache Hadoop?

811

What is the problem with small files in Apache Hadoop?

833

What is Rack Awareness in Apache Hadoop?

850

Explain Erasure Coding in Apache Hadoop?

792

What is Disk Balancer in Apache Hadoop?

940

What is a speculative execution in Apache Hadoop MapReduce?

822

What are the modes in which Apache Hadoop run?

829

What is Safemode in Apache Hadoop?

770