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Hadoop Interview Questions
Questions Answers Views Company eMail

How many default mappers in sqoop ?

 5

Write a quert to import a file in sqoop?

 5

What is Sqoop Import? Explain its purpose?

 5

What is the default file format to import data using Apache Sqoop?

 5

How can I import large objects (BLOB and CLOB objects) in Apache Sqoop?

 5

How can you execute a free-form SQL query in Sqoop to import the rows in a sequential manner?

 5

Does Apache Sqoop have a default database?

 5

How will you list all the columns of a table using Apache Sqoop?

 5

Name a few import control commands. How can Sqoop handle large objects?

 5

How can we import data from particular row or column? What is the destination types allowed in Sqoop import command?

 5

When to use –target-dir and when to use –warehouse-dir while importing data?

 5

What is the significance of using –compress-codec parameter?

 5

Can free-form SQL queries be used with Sqoop import command? If yes, then how can they be used?

 5

What is the importance of eval tool?

 5

How can you import only a subset of rows from a table?

 5

Un-Answered Questions { Hadoop }

Name the examples of some companies that are using hadoop structure?

691

How to start a kafka server?

610

What is Hector in Cassandra?

102

Elaborate kafka architecture?

515

What are the two main components of ResourceManager?

1164

Can I run an ensemble cluster behind a load balancer?

1

What does rack awareness algorithm means?

488

Explain the concept of Tunable Consistency in Cassandra?

200

What language is apache kafka written in?

534

How will you write a custom partitioner for a Hadoop job?

453

Explain reduceByKey() Spark operation?

300

Cassandra is written in which language?

96

What are brokers in kafka?

503

What is the purpose of button groups?

751

Are sparks dangerous?

345

For More Un-Answered { Hadoop } Questions Click Here