Topic :: MapReduce





MapReduce Interview Questions
Questions Answers Views Company eMail

What is a RecordReader in Hadoop MapReduce?

 398

How to write MapReduce Programs?

 405

What is the difference between Pig and MapReduce?

 317

What is a speculative execution in Apache Hadoop MapReduce?

 440

When is it not recommended to use MapReduce paradigm for large scale data processing?

 390

What are the main components of MapReduce Job?

 424

What combiners is and when you should use a combiner in a MapReduce Job?

 371

What is partitioning in MapReduce?

 408

State some use cases where Hadoop MapReduce works well and where it does not.

WalMart,

117

What advantages does Spark offer over Hadoop MapReduce?

 209

What are the disadvantages of using Apache Spark over Hadoop MapReduce?

 346

How can you launch Spark jobs inside Hadoop MapReduce?

 248

Which one will you choose for a project –Hadoop MapReduce or Apache Spark?

 204

What is the difference between MapReduce engine and HDFS cluster?

 77

What is the difference between RDBMS with Hadoop MapReduce?

 494



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Un-Answered Questions { MapReduce }

What MapReduce framework consists of?

765

Can we submit the mapreduce job from slave node?

844

What is a IdentityMapper and IdentityReducer in MapReduce ?

636

Explain Working of MapReduce?

664

Write a Mapreduce Program for Character Count ?

709




how to proceed to write your first mapreducer program?

1027

Developing a MapReduce Application?

656

Different ways of debugging a job in MapReduce?

802

What are combiners? When should I use a combiner in my MapReduce Job?

655

How does MapReduce framework view its input internally?

590

What are the steps involved in MapReduce framework?

611

What is the Job interface in MapReduce framework?

644

How to overwrite an existing output file during execution of mapreduce jobs?

843

What is the core of the job in MapReduce framework?

580

How Pig differs from MapReduce?

566