Where is the Mapper Output stored?
What is the difference between rdbms and hadoop?
How is HDFS fault tolerant?
Why do we use HDFS for applications having large data sets and not when there are lot of small files?
What is the jobtracker and what it performs in a hadoop cluster?
What are the network requirements for using hadoop?
What is salary of hadoop developer?
What is the use of Combiner?
What does ‘jps’ command do?
What is IdentityMapper?
What will you do when NameNode is down?
What is Apache Hadoop? Why is Hadoop essential for every Big Data application?
How to change Replication Factor For below cases ?