Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

What is Sqoop Import? Explain its purpose?

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

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

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

Does Apache Sqoop have a default database?

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

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

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

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

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

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

What is the importance of eval tool?

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

What is the advantage of using –password-file rather than -P option while preventing the display of password in the sqoop import statement?

What do you mean by Free Form Import in Sqoop?

Un-Answered Questions { Big Data }

What is kerberos secured cluster in apache pig?

704

What is Fault Tolerance in HDFS?

Can you list few commonly used hive services?

657

Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?

762

Explain what is a task tracker in hadoop?

452

Name some features of Apache Cassandra?

What is the procedure to recover a namenode when it is slow?

651

What are different String functions available in PIG?

595

On what basis name node distribute blocks across the data nodes?

1060

Explain the overview of hadoop history breifly?

623

What is mlib in apache spark?

305

What happens if the block on Hadoop HDFS is corrupted?

Is it possible to use Kafka without ZooKeeper?

651

How to explain Bigdatadeveloper projects

590

What are hive operators and its types?

751

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