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 are the functions of presto?

What is dataframe api?

340

What is shuffle spill in spark?

294

Is it possible to share data files between different components?

What is the roadmap for apache driver version one.0?

Explain the term paired RDD in Apache Spark?

421

Can you give a detailed overview about the Big Data being generated by Facebook?

493

How you can remove the element with a critical present in any other Rdd is Apache spark?

327

What is write ahead log(journaling) in Spark?

444

Mention if we can name view same as the name of a Hive table?

728

Which command is used to list all the tables in a database or list all the columns in a table?

What is dag – directed acyclic graph?

320

how can you check whether Namenode is working beside using the jps command?

737

Define Actions.

320

On which port does ssh work?

792

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