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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

Explain InputSplit in Hadoop?

 434

What is the purpose of RecordReader in hadoop?

 442

What is Combiner in Hadoop?

 495

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

 421

What is KeyValueTextInputFormat in Hadoop?

 482

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

 464

What is TextInputFormat in Hadoop?

 473

What is purpose of RecordWriter in Hadoop?

 477

What are the most common OutputFormat in Hadoop?

 517

What is LazyOutputFormat in Hadoop?

 459

How is the splitting of file invoked in Hadoop ?

 479

How many InputSplits will be made by hadoop framework?

 457

What is the difference between an RDBMS and Hadoop?

 606

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

 672

What is the data storage component used by Hadoop?

 580



Related Topics


Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1416

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

959

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

846

What are the core components of Apache Hadoop?

713

What is the difference between Apache Hadoop and RDBMS?

737

How is security achieved in Apache Hadoop?

834

What is Apache Hadoop?

800

What is a “Distributed Cache” in Apache Hadoop?

724

What is the problem with small files in Apache Hadoop?

725

What is Rack Awareness in Apache Hadoop?

746

Explain Erasure Coding in Apache Hadoop?

692

What is Disk Balancer in Apache Hadoop?

798

What is a speculative execution in Apache Hadoop MapReduce?

739

What are the modes in which Apache Hadoop run?

744

What is Safemode in Apache Hadoop?

677