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

Big Data Interview Questions

Questions Answers Views Company eMail

How to identify that the given operation is transformation or action?

290

Why we need compression and what are the different compression format supported?

303

Is ambari python client can be used to make good use of ambari api’s?

Mention what does the shell commands “capture” and “consistency” determines?

Explain what is composite type in cassandra?

Mention what are the main components of cassandra data model?

Explain what is a cluster in cassandra?

Tell any two features of flume?

116

What will be the result when you do cast(‘abc’ as int)?

814

If you omit the overwrite clause while creating a hive table,what happens to file which are new and files which already exist?

813

How will you convert the string ’51.2’ to a float value in the price column?

931

Can I do transforms or add new functionality?

Why is space not freed up when I issue drop table?

Is avro supported?

Explain what is zookeeper in kafka? Can we use kafka without zookeeper?

580

Un-Answered Questions { Big Data }

What are the Hadoop features extended to its eco-system components ?

492

Hadoop uses replication to achieve fault tolerance. How is this achieved in Apache Spark?

428

Is it necessary to kill the topology while updating the running topology?

631

What do you mean by “data centre” in cassandra?

Is spark difficult to learn?

323

What can skew the mean?

298

If datanodes increase, then do we need to upgrade namenode?

523

What is the difference between hadoop and other data processing tools?

737

How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?

740

How does spark work with python?

315

Clarify how ordering in hdfs is finished?

544

What do you mean by Free Form Import in Sqoop?

How is the distance between two nodes defined in Hadoop?

1506

What kind of datawarehouse application is suitable for Hive?

720

When should we use SORT BY instead of ORDER BY?

754

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