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 can we create children / sub-znode?

How can we remove a znode?

Explain the zookeeper workflow?

What are the basics of zookeeper api?

What is mandatory while creating a table in cassandra?

Explain what is cassandra?

List out the other components of cassandra?

101

What is the use of cassandra and why to use cassandra?

155

Explain what is a column family in cassandra?

124

what is a cluster in cassandra?

105

what are the main components of cassandra data model?

what is composite type in cassandra?

what are the values stored in the cassandra column?

When to use secondary indexes?

What are the benefits of NoSQL over relational database?

225

Un-Answered Questions { Big Data }

Name some companies that are already using Spark Streaming?

286

What is row rdd in spark?

308

In MapReduce, ideally how many mappers should be configured on a slave?

713

What are the scalar data types in Pig?

641

what is difference between int and intwritable?

1519

Mention some machine learning algorithms exposed by mahout?

Why Hadoop MapReduce?

715

What are the primary phases of the reducer?

494

Differentiate between nas and hdfs

593

Define the management tools in Cassandra?

What is difference between spark and mapreduce?

295

What are some typical functions of Job Tracker?

488

Define fault tolerance?

702

What is executor and driver in spark?

299

What is PageRank in Spark?

289

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