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 do you mean by logging in cassandra?

What do you mean by replication strategy?

How data or a file is written into hdfs?

What is a namenode in hadoop?

What is secondary namenode?

What do you mean by meta data in hdfs? List the files associated with metadata.

Explain the hdfs architecture and list the various hdfs daemons in hdfs cluster?

Can you modify the file present in hdfs?

Define data integrity?

What do you mean by the high availability of a namenode? How is it achieved?

Hdfs stores data using commodity hardware which has higher chances of failures. So, how hdfs ensures the fault tolerance capability of the system?

Define hadoop archives?

What is secondary namenode? Is it a substitute or back up node for the namenode?

What is the command for archiving a group of files in hdfs.

Explain the hdfs architecture?

Un-Answered Questions { Big Data }

What is the use of map transformation?

299

Why do we need a new framework for handling big data?

590

What is the difference between nas (network attached storage) and hdfs?

What are the different components of Cassandra?

105

What is the FlatMap Transformation in Apache Spark RDD?

279

Discuss the various running mode of Apache Spark?

283

Explain about catalog configuration?

List the functions of Spark SQL?

468

What do you understand by mapreduce?

603

Who is the founder of spark?

299

What we need to be taken care while adding a column?

What are the features of kafka?

512

Explain pig architecture?

513

What do you understand by Executor Memory in a Spark application?

456

What is Importance of Java in Apache Kafka?

527

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