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 non-dfs used in hdfs web console

If the source data gets updated every now and then, how will you synchronize the data in hdfs that is imported by sqoop?

149

How to use hdfs put command for data transfer from flume to hdfs?

What are tools available to send the streaming data to hdfs?

how does hdfs ensure data integrity of data blocks stored in hadoop hdfs?

Compare hbase vs hdfs?

Which classes are used by the hive to read and write hdfs files?

Is the hdfs block size reduced to achieve faster query results?

Why does hive not store metadata information in hdfs?

When and how to create hadoop archive?

444

What is the difference between namenode and datanode in hadoop?

495

Ideally what should be the replication factor in hadoop?

425

What is rack awareness in hadoop?

487

While starting hadoop services, datanode service is not running?

439

what happens when namenode goes down during file read operation in hadoop?

593

Un-Answered Questions { Big Data }

What is the most widely recognized info formats characterized in hadoop?

431

What happens when the data set exceeds available memory?

Explain the benefits of big data?

528

Can we have different replication factor of the existing files in hdfs?

What are the functionalities of jobtracker?

672

How many Reducers should be configured?

180

What is off heap memory in spark?

305

Is hive suitable to be used for oltp systems? Why?

795

What can you do with Kafka?

545

What do you understand by High availability?

Which java class handles the Input record encoding into files which store the tables in Hive?

730

What are the advantages of pig language?

888

Name the management tools in Cassandra?

What do you understand by the term data storage?

553

What is MapReduce? What are the syntax you use to run a MapReduce program?

667

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