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 the different types of Znodes?

693

How many instances of JobTracker can run on a Hadoop Cluser?

648

What's the best way to copy files between HDFS clusters?

801

Can Apache Kafka be used without Zookeeper?

669

What is Your Cluster size ?

1131

What is the default block size in hdfs?

719

What are active and passive "NameNodes"?

1058

It can be possible that a Job has 0 reducers?

625

What are combiners and its purpose?

626

On what basis Namenode will decide which datanode to write on?

1011

Can Hadoop be compared to NOSQL database like Cassandra?

644

What is a Secondary Namenode? Is it a substitute to the Namenode?

708

what are relational operations in pig latin?

518

What is the difference between SQL and NoSQL?

656

What are the additional benefits YARN brings in to Hadoop?

636

Un-Answered Questions { Big Data }

Mention what happens if the preferred replica is not in the ISR?

337

Explain the master class and the output class do?

365

What is Spark Driver?

197

Explain how can we change the split size if our commodity hardware has less storage space?

380

Explain about postgresql storage handler?

Doesn’t google have its very own version of dfs?

248

How data transfer happens from HDFS to Hive?

442

How job tracker schedules an assignment?

221

What is Apache Pig?

570

What do you understand by a closure in scala?

277

What is the purpose of ‘dump’ keyword in Pig?

357

What is the concept of SuperColumn in Cassandra?

What is the difference between Pig and MapReduce?

310

What are the different types of UDF's in Java supported by Apache Pig?

609

What is sink processors?

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