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 are input format, input split & record reader and what they do?

629

How namenode handles data node failures?

529

What is the non dfs used?

555

How can one write custom record reader?

492

Whats the default port that jobtrackers listens ?

479

Do we need to place 2nd and 3rd data in rack 2 only?

443

Is nosql follow relational db model?

467

What are the different clustering in mahout?

What does apache mahout do?

What is the difference between apache mahout and apache spark’s mllib?

What is the roadmap for apache mahout version 1.0?

What is apache mahout?

Mention some machine learning algorithms exposed by mahout?

What are the features of apache mahout?

How can we scale apache mahout in cloud?

Un-Answered Questions { Big Data }

Establish the difference between a node, cluster & data centres in Cassandra.

143

What is a spark shuffle?

334

Explain Creating an Index?

how would you modify that solution to only count the number of unique words in all the documents?

977

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

What is the fundamental difference between a MapReduce InputSplit and HDFS block?

625

Explain the features of fully distributed mode?

629

Explain some Kafka Streams real-time Use Cases?

528

What are the optimization techniques in spark?

282

Where does the data of a Hive table gets stored?

671

Does cassandra support acid tractions?

What is the role of “ambari-qa” user?

How do ‘map’ and ‘reduce’ work?

659

What is org.apache.jute package?

What are the components of Hive architecture?

1114

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