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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

Why Hadoop MapReduce?

 715

Explain slot in Hadoop Map-Reduce v1?

 738

Where sorting is done in Hadoop MapReduce Job?

 692

How many times combiner is called on a mapper node in Hadoop?

 703

Is reduce-only job possible in Hadoop MapReduce?

 748

Differentiate Reducer and Combiner in Hadoop MapReduce?

 731

How to write a custom partitioner for a Hadoop MapReduce job?

 699

What is the need of MapReduce in Hadoop?

 685

What is the difference between Reducer and Combiner in Hadoop MapReduce?

 733

What is Data Locality in Hadoop?

 721

What is KeyValueTextInputFormat in Hadoop MapReduce?

 859

What is Mapper in Hadoop MapReduce?

 791

Which Sorting algorithm is used in Hadoop MapReduce?

 645

Define Writable data types in Hadoop MapReduce?

 696

What is shuffling and sorting in Hadoop MapReduce?

 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