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

Big Data Interview Questions

Questions Answers Views Company eMail

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

Why is Reading done in parallel and writing is not in HDFS?

Can multiple clients write into an HDFS file concurrently in hadoop?

How to create Users in hadoop HDFS?

How to transfer data from Hive to HDFS?

Why HDFS stores data using commodity hardware despite the higher chance of failures in hadoop?

What is Hadoop Distributed File System- HDFS?

What is throughput in HDFS?

How is hadoop related to the big data? Describe its components?

507

What are 5 vs of big data ?

550

Connection between hadoop and big data?

566

Define big data?

570

What is data processing in big data?

697

Explain the five vs of big data?

559

Define role of variety in big data?

559

Un-Answered Questions { Big Data }

how can you identify whether a given operation is transformation or action?

273

What is a block in Hadoop HDFS? What should be the block size to get optimum performance from the Hadoop cluster?

What is the difference between rdd and dataframe in spark?

352

What is spark shuffle service?

338

Can you explain textinformat?

503

What is difference between reducer and combiner?

569

How to Delete file from HDFS?

How does Mappers run method works?

902

How does rdd work in spark?

302

How to call impala built-in functions?

Explain combiners.

644

What are sink processors?

921

What is the purpose of Hive Driver?

1062

What is spark client?

282

Explain jsonloader, jsonstorage functions in pig?

593

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