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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?

 698

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

 683

How data is spilt in Hadoop?

 700

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

 690

What is the difference between Hadoop and RDBMS?

 689

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

 718

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

 745

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

 714

how Hadoop is different from other data processing tools?

 703

what is a sequence file in Hadoop?

 741

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?

 534

Why use hadoop?

 482

What are the actions followed by hadoop?

 512



Related Topics


Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1499

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

1048

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

969

What are the core components of Apache Hadoop?

829

What is the difference between Apache Hadoop and RDBMS?

856

How is security achieved in Apache Hadoop?

965

What is Apache Hadoop?

900

What is a “Distributed Cache” in Apache Hadoop?

824

What is the problem with small files in Apache Hadoop?

839

What is Rack Awareness in Apache Hadoop?

859

Explain Erasure Coding in Apache Hadoop?

803

What is Disk Balancer in Apache Hadoop?

953

What is a speculative execution in Apache Hadoop MapReduce?

834

What are the modes in which Apache Hadoop run?

840

What is Safemode in Apache Hadoop?

781