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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

Is YARN a replacement of Hadoop MapReduce?

 1 1941

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

 1172

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

 1245

What comes in Hadoop 2.0 and MapReduce V2 YARN

 961

Can you overwrite Hadoop MapReduce configuration in Hive?

 852

Differentiate between Hadoop MapReduce and Pig?

 606

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

 397

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

 728

what is NameNode in Hadoop?

 827

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

 743

What is a "map" in Hadoop?

 743

What is a "reducer" in Hadoop?

 824

How is reporting controlled in hadoop?

 736

What is Hadoop Map Reduce ?

 766

In Hadoop, which file controls reporting in Hadoop?

 742



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?

727

What is Rack Awareness in Apache Hadoop?

747

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?

678