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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?

 479

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

 510

What does the file hadoop-metrics.properties do?

 539

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?

 505

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

 503

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

 480

What is the basic difference between traditional RDBMS and Hadoop?

 484

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

 478

How does speculative execution work in Hadoop?

 489

What is High Availability feature in Hadoop2?

 484

How many datanodes can run on a single Hadoop cluster?

 491

Give a brief overview of Hadoop history?

 469

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

 507

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

 521

What are some of the characteristics of Hadoop framework?

 495



Related Topics


Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1499

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

1048

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

969

What are the core components of Apache Hadoop?

829

What is the difference between Apache Hadoop and RDBMS?

856

How is security achieved in Apache Hadoop?

965

What is Apache Hadoop?

900

What is a “Distributed Cache” in Apache Hadoop?

824

What is the problem with small files in Apache Hadoop?

839

What is Rack Awareness in Apache Hadoop?

859

Explain Erasure Coding in Apache Hadoop?

803

What is Disk Balancer in Apache Hadoop?

953

What is a speculative execution in Apache Hadoop MapReduce?

834

What are the modes in which Apache Hadoop run?

840

What is Safemode in Apache Hadoop?

781