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Hadoop Interview Questions
Questions Answers Views Company eMail

Where do you specify the Mapper Implementation?

 625

What is the meaning of speculative execution in Hadoop? Why is it important?

 749

What is the InputFormat ?

 675

Command to format the NameNode?

 633

Who is a 'user' in HDFS?

 654

What is the meaning of the term "non-DFS used" in Hadoop web-console?

 940

did you maintain the hadoop cluster in-house or used hadoop in the cloud?

 710

What is DistributedCache and its purpose?

 622

What is HDFS ? How it is different from traditional file systems?

 625

What is HDFS Block size? How is it different from traditional file system block size?

 1 888

How you can contact your client everyday ?

 590

What is Input Split in hadoop?

 624

What is 'Key value pair' in HDFS?

 625

How to keep HDFS cluster balanced?

 801

What is the port number for NameNode

 580

Un-Answered Questions { Hadoop }

What does the "USE" command in hive do?

429

What are file permissions in HDFS? how does HDFS check permissions for files/directory?

32

What is the driver program in spark?

183

What are the tools that are needed to build ambari?

69

List Hadoop’s three configuration files?

221




Mention key components of Hive Architecture?

598

Explain the hadoop configuration files at present?

367

How does hdfs get a good throughput?

44

Specify the different types of tables accessible in hive?

469

How will you make changes to the default configuration files?

560

Explain what is webdav in hadoop?

277

What relational operators can we use that are related to combining and splitting in Pig language?

318

How the SSTable is different from other relational tables?

53

What is a Record Reader in hadoop?

679

What is SequenceFileInputFormat?

528

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