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

Big Data Interview Questions

Questions Answers Views Company eMail

Name the types of tunable consistency?

102

What is the History of Cassandra Database ?

What is the Virtual Node in Cassandra ?

What is the main objective of creating Cassandra?

110

What is Replication Factor in Cassandra?

Define the consistency levels for read operations in Cassandra?

Name some features of Apache Cassandra?

How to iterate all rows in ColumnFamily?

What is a column family in Cassandra?

Name different types of NoSQL database?

What is SSTable?

Define data replication?

What is the Cassandra Coefficient ?

What is the relationship between Hadoop, HBase, Hive and Cassandra ?

151

Explain Cqlsh?

Un-Answered Questions { Big Data }

What is document store db? Explain with an example.

Define Spark-SQL?

297

What is difference between dataset and dataframe?

409

How to iterate all rows in ColumnFamily?

What is key-value store db?

Describe Partition and Partitioner in Apache Spark?

313

What is Apache Spark and what are the benefits of Spark over MapReduce?

296

Explain the concept of Tunable Consistency in Cassandra?

204

What is distributed copy (distcp)?

533

What is Mapper in Hadoop MapReduce?

790

What is row in hbase?

178

Data Engineer Given a list of followers in the format:123, 345234, 678345, 123â€¦Where column one is the ID of the follower and column two is the ID of the followee. Find all mutual following pairs (the pair 123, 345 in the example above). How would you use Map/Reduce to solve the problem when the list does not fit in memory?

787

Why is jconsole used?

106

What do hive variable means? How can we utilize it?

635

Describe Memtable?

For More Un-Answered { Big Data } Questions Click Here