Define the purpose of the partition function in mapreduce framework
How many Reducers run for a MapReduce job?
In MapReduce, ideally how many mappers should be configured on a slave?
What is the difference between HDFS block and input split?
What is the difference between Hadoop and RDBMS?
How can we assure that the values regarding a particular key goes to the same reducer?
What is a distributed cache in mapreduce framework?
What combiners is and when you should use a combiner in a MapReduce Job?
what is WebDAV in Hadoop?
What is heartbeat in hdfs? Explain.
Detail description of the Reducer phases?
Name job control options specified by mapreduce.
Clarify what is shuffling in map reduce?