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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

Explain InputSplit in Hadoop?

 506

What is the purpose of RecordReader in hadoop?

 528

What is Combiner in Hadoop?

 583

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

 511

What is KeyValueTextInputFormat in Hadoop?

 584

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

 534

What is TextInputFormat in Hadoop?

 573

What is purpose of RecordWriter in Hadoop?

 548

What are the most common OutputFormat in Hadoop?

 588

What is LazyOutputFormat in Hadoop?

 546

How is the splitting of file invoked in Hadoop ?

 581

How many InputSplits will be made by hadoop framework?

 535

What is the difference between an RDBMS and Hadoop?

 699

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

 755

What is the data storage component used by Hadoop?

 686



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