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 is flume and sqoop?

107

Why is flume used?

How does a log flume work?

What kind of music is flume?

How much does flume cost?

What is “serde” in “hive”?

693

Explain about the smb join in hive?

724

Compare hadoop & spark?

263

What are ‘reduces’?

701

Explain how do ‘map’ and ‘reduce’ work?

606

How do ‘map’ and ‘reduce’ work?

648

Explain the input type/format in mapreduce by default?

579

Can you explain the benefits of big data?

591

Explain the steps to be followed to deploy a big data solution?

502

Can you define fsck?

530

Un-Answered Questions { Big Data }

Difference between groupByKey vs reduceByKey in Apache Spark?

468

What do you know about the speculative execution?

458

What is the purpose of sqoop-merge?

Explain combiners.

627

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

618

What are producer-consumer queues?

What role does worker node play in Apache Spark Cluster? And what is the need to register a worker node with the driver program?

346

What is a rack awareness algorithm?

What are the main benefits of using cassandra?

When Hive is run in embedded mode

1881

What is the difference between structured and unstructured big data?

524

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

408

Explain some Kafka Streams real-time Use Cases?

524

Explain MemStore?

176

Explain the core methods of a reducer?

510

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