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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

Explain InputSplit in Hadoop?

 495

What is the purpose of RecordReader in hadoop?

 511

What is Combiner in Hadoop?

 568

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

 494

What is KeyValueTextInputFormat in Hadoop?

 573

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

 525

What is TextInputFormat in Hadoop?

 562

What is purpose of RecordWriter in Hadoop?

 539

What are the most common OutputFormat in Hadoop?

 575

What is LazyOutputFormat in Hadoop?

 532

How is the splitting of file invoked in Hadoop ?

 568

How many InputSplits will be made by hadoop framework?

 521

What is the difference between an RDBMS and Hadoop?

 686

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

 745

What is the data storage component used by Hadoop?

 674



Related Topics


Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1490

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

1041

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

955

What are the core components of Apache Hadoop?

815

What is the difference between Apache Hadoop and RDBMS?

840

How is security achieved in Apache Hadoop?

951

What is Apache Hadoop?

891

What is a “Distributed Cache” in Apache Hadoop?

809

What is the problem with small files in Apache Hadoop?

832

What is Rack Awareness in Apache Hadoop?

849

Explain Erasure Coding in Apache Hadoop?

791

What is Disk Balancer in Apache Hadoop?

939

What is a speculative execution in Apache Hadoop MapReduce?

821

What are the modes in which Apache Hadoop run?

828

What is Safemode in Apache Hadoop?

769