What is a 'block' in HDFS?
What is DistributedCache and its purpose?
What is Safemode in Apache Hadoop?
What is NoSQL?
Should we use RAID in Hadoop or not?
Explain the benefits of block transfer?
What is nlineoutputformat?
Explain why the name ‘hadoop’?
How to use Apache Zookeeper command line interface?
What is HDFS Federation?
Explain the hadoop-core configuration?
What is version-id mismatch error in hadoop?
How did you debug your Hadoop code ?