What are the main components of a Hadoop Application?
How to configure hadoop to reuse JVM for mappers?
What is Apache Hadoop YARN?
Why is Apache Spark faster than Apache Hadoop?
What is Hadoop Custom partitioner ?
What is a Secondary Namenode? Is it a substitute to the Namenode?
Give the use of the bootstrap panel.
What are different types of filesystem?
How is HDFS fault tolerant?
Can the balancer be run while Hadoop is in use?
Explain the basic difference between traditional rdbms and hadoop?
How to come out of the insert mode?
What is version-id mismatch error in hadoop?
What is a task instance in hadoop? Where does it run?
What is a spill factor with respect to the ram?