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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

What platform and Java version is required to run Hadoop?

 603

what are the three modes in which Hadoop can be run?

 588

How data is spilt in Hadoop?

 619

what is "map" and what is "reducer" in Hadoop?

 601

What is the difference between Hadoop and RDBMS?

 588

For a Hadoop job, how will you write a custom partitioner?

 613

what happens when Hadoop spawned 50 tasks for a job and one of the task failed?

 658

what is the Hadoop MapReduce APIs contract for a key and value class?

 626

how Hadoop is different from other data processing tools?

 607

what is a sequence file in Hadoop?

 639

What is hadoop role in an enterprise data hub?

 3

Can you explain cdh (cloudera distribution including apache hadoop)?

 3

Which directory does hadoop install to?

 460

Why use hadoop?

 401

What are the actions followed by hadoop?

 433



Related Topics


Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1417

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

961

What is Apache Hadoop? Why is Hadoop essential for every Big Data application?

850

What are the core components of Apache Hadoop?

718

What is the difference between Apache Hadoop and RDBMS?

743

How is security achieved in Apache Hadoop?

836

What is Apache Hadoop?

800

What is a “Distributed Cache” in Apache Hadoop?

725

What is the problem with small files in Apache Hadoop?

729

What is Rack Awareness in Apache Hadoop?

750

Explain Erasure Coding in Apache Hadoop?

693

What is Disk Balancer in Apache Hadoop?

802

What is a speculative execution in Apache Hadoop MapReduce?

739

What are the modes in which Apache Hadoop run?

747

What is Safemode in Apache Hadoop?

684