Apache Hadoop Interview Questions
Questions Answers Views Company eMail

What is safe mode in Hadoop?

777

What is MapFile?

774

What do you understand from Node redundancy and is it exist in hadoop cluster?

1028

What happens to a NameNode that has no data?

1355

What is a heartbeat in HDFS?

744

What are sink processors?

733

Does hadoop always require digital data to process?

925

what is meaning Replication factor?

756

What is the purpose of RawComparator interface?

893

Where is the Mapper Output stored?

1167

What is the function of ApplicationMaster?

775

What problems can be addressed by using Zookeeper?

777

What is Hadoop streaming?

839

Is client the end user in HDFS?

825

Can the balancer be run while Hadoop is in use?

772


Post New Apache Hadoop Questions

Un-Answered Questions { Apache Hadoop }

What is the difference between rdbms and hadoop?

467


Define streaming?

487


What do the master class and the output class do?

487


What does ‘jps’ command do?

515


What is the problem with small files in Apache Hadoop?

538






What is HDFS High Availability?

808


What is InputSplit and RecordReader?

739


Which are the two types of 'writes' in HDFS?

1010


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

1026


How is hadoop different from other data processing tools?

486


What is HDFS - Hadoop Distributed File System?

761


What is the port number for NameNode

681


What are the benefits of block transfer?

748


Define a combiner?

464


What is HDFS block size and what did you chose in your project?

728