what is a Task Tracker in Hadoop?
what are the most common input formats defined in Hadoop?
what daemons run on a master node and slave nodes?
What is Text Input Format?
what is WebDAV in Hadoop?
What platform and Java version is required to run Hadoop?
what are the three modes in which Hadoop can be run?
How data is spilt in Hadoop?
what is storage and compute nodes?
When Namenode is down what happens to job tracker?
what are the main configuration parameters that user need to specify to run Mapreduce Job ?
what is "map" and what is "reducer" in Hadoop?
What is Shuffling and Sorting in a MapReduce?
What is the difference between Hadoop and RDBMS?
how can you check whether Namenode is working beside using the jps command?