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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

Is YARN a replacement of Hadoop MapReduce?

 1 2020

Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?

 1214

What is the Hadoop MapReduce API contract for a key and value Class?

 1292

What comes in Hadoop 2.0 and MapReduce V2 YARN

 1003

Can you overwrite Hadoop MapReduce configuration in Hive?

 908

Differentiate between Hadoop MapReduce and Pig?

 645

Hadoop uses replication to achieve fault tolerance. How is this achieved in Apache Spark?

 408

what is JobTracker in Hadoop? What are the actions followed by Hadoop?

 769

what is NameNode in Hadoop?

 878

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

 782

What is a "map" in Hadoop?

 793

What is a "reducer" in Hadoop?

 870

How is reporting controlled in hadoop?

 782

What is Hadoop Map Reduce ?

 805

In Hadoop, which file controls reporting in Hadoop?

 774



Related Topics


Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1456

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

1006

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?

751

What is Disk Balancer in Apache Hadoop?

889

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?

735