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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

Have you ever used counters in hadoop?

 421

What are some typical functions of job tracker in hadoop?

 418

Can you define inputsplit in hadoop?

 468

What are the main components of hadoop?

 432

Can you explain sequence file in hadoop?

 404

What is the use of recordreader in hadoop?

 419

What is the number of default partitioner in hadoop?

 441

Can you explain hadoop streaming?

 420

What is job tracker role in hadoop?

 471

How many daemon processes run on a hadoop cluster?

 456

Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?

 479

Which operating system(s) are supported for production hadoop deployment?

 428

Why is checkpointing important in hadoop?

 468

What are the differences between hadoop 1 and hadoop 2?

 434

Why do the nodes are removed and added frequently in a hadoop cluster?

 475



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Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1454

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

1005

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?

750

What is Disk Balancer in Apache Hadoop?

887

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?

733