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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?

 440

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

 469

What does the file hadoop-metrics.properties do?

 486

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?

 456

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

 453

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

 419

What is the basic difference between traditional RDBMS and Hadoop?

 443

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

 430

How does speculative execution work in Hadoop?

 435

What is High Availability feature in Hadoop2?

 440

How many datanodes can run on a single Hadoop cluster?

 452

Give a brief overview of Hadoop history?

 418

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

 461

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

 474

What are some of the characteristics of Hadoop framework?

 438



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