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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

Explain InputSplit in Hadoop?

 460

What is the purpose of RecordReader in hadoop?

 482

What is Combiner in Hadoop?

 534

If no custom partitioner is defined in Hadoop then how is data partitioned before it is sent to the reducer?

 451

What is KeyValueTextInputFormat in Hadoop?

 529

What happen if number of reducer is set to 0 in Hadoop?

 493

What is TextInputFormat in Hadoop?

 516

What is purpose of RecordWriter in Hadoop?

 509

What are the most common OutputFormat in Hadoop?

 549

What is LazyOutputFormat in Hadoop?

 495

How is the splitting of file invoked in Hadoop ?

 534

How many InputSplits will be made by hadoop framework?

 492

What is the difference between an RDBMS and Hadoop?

 640

How does Hadoop Classpath plays a vital role in stopping or starting in Hadoop daemons?

 709

What is the data storage component used by Hadoop?

 619



Related Topics


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