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 }

How we can change Replication factor when Data is on the fly?

1343

What does apache spark stand for?

281

Can we submit the mapreduce job from slave node?

1105

what needs to be taken care while adding a Column?

107

What do you mean by Stream Processing in Kafka?

522

Define MapReduce?

691

Can there be no Reducer?

840

Define a column family?

What happens to existing data in my cluster when I add new nodes?

230

What are the core components that are utilized in hadoop?

518

Explain the key features of Spark.

284

Name some features of Apache Cassandra?

Differentiate between FileSink and FileRollSink?

107

Explain in brief what is the architecture of Spark?

312

What are watches?

1033

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