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Hadoop Interview Questions
Questions Answers Views Company eMail

What are the general Prerequisites to learn HCatalog?

 5

How HCatalog helps to capture processing states to enable sharing?

 5

How to invoke Command Line Interface?

 5

Who is intended audience to learn HCatalog?

 5

Explain HCatalog Create Table CLI along with its syntax?

 5

State some DDL Command with brief Description?

 5

Explain Apache Ambari?

 53

How many layers of Hadoop components are supported by Apache Ambari and what are they?

 89

What are the particular functionalities of Ganglia in Ambari?

 59

What are the particular functionalities of Nagios in Ambari?

 56

Name several advantages of Apache Ambari?

 53

Who should learn Apache Ambari?

 47

Explain Apache Ambari architecture?

 53

Can Ambari manage multiple clusters?

 66

What are the major areas where Ambari helps the system administrators to do?

 49

Un-Answered Questions { Hadoop }

Explain the process of spilling in MapReduce?

453

Are spark dataframes distributed?

260

Explain what is “map” and what is "reducer" in hadoop?

474

Is it possible to create cartesian join between 2 tables, using hive?

521

Is it possible to run Apache Spark without Hadoop?

234

What is the unit of data that flows through a flume agent?

354

What is a block in HDFS? what is the default size in Hadoop 1 and Hadoop 2? Can we change the block size?

56

What do you understand by an inner bag and outer bag in Pig?

672

Explain the process of spilling in Hadoop MapReduce?

468

What is a DStream?

282

Use of list-databases command in hadoop sqoop?

5

Does this lead to security issues?

537

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

814

Can we change the data type of a column in a hive table?

529

What is a Hive variable? What for we use it?

601

For More Un-Answered { Hadoop } Questions Click Here