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  1. Categories >> Software >> Big Data >> Hadoop >> Hadoop General
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Hadoop General Interview Questions
Questions Answers Views Company eMail

What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?

 489

What are the configuration files in Hadoop?

 542

Compare Apache Hadoop and Apache Spark?

 451

What are the different modes in which we can configure/install Hadoop?

 542

Explain how Hadoop cluster hardware planning and provisioning is done?

 556

How to create a user in Hadoop?

 493

What are the major differences between Hadoop 2 and Hadoop 3?

 480

What is single node cluster in Hadoop? for what all purposes Hadoop run on a single node cluster?

 541

How to specify more than one path for storage in Hadoop?

 509

What is a single point of failure in Hadoop 1 and how is it resolved in Hadoop 2?

 587

What is JPS? Why is it used in Hadoop?

 529

What is the key difference between NameNode and DataNode in Hadoop?

 494

What is Small File Problem in Hadoop? How can it be resolved?

 540

Ideally what should be replication factor in a Hadoop cluster?

 519

What is NameNode? How NameNode tackle Datanode failures in Hadoop?

 468

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Un-Answered Questions { Hadoop General }

What is High Availability feature in Hadoop2?

446

How does speculative execution work in Hadoop?

441

What is the NameNode port number?

400

What are the benefits yarn brings in to hadoop?

429

After increasing the replication level, I still see that data is under replicated. What could be wrong?

465

Define a sequence file in hadoop?

546

Explain what happens in text format?

579

What is Mapper? How can we compress Mapper output in Hadoop?

521

Why do we need hadoop for big data analytics?

437

How does hadoop achieve fault tolerance?

417

How to create hadoop archive?

424

Which language is more suitable for text analytics? R or python?

439

What happens if the number of reducers is 0 in Hadoop?

481

Does hadoop follows the unix pattern?

432

What is check pointing in hadoop?

443

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