Explain JobConf in MapReduce.
What is the need of MapReduce in Hadoop?
Is it important for Hadoop MapReduce jobs to be written in Java?
Mention when to use Map reduce mode?
What is the relation between MapReduce and Hive?
What is the relationship between Job and Task in Hadoop?
What is an input reader in reference to mapreduce?
how can you debug Hadoop code?
what is a Task Tracker in Hadoop?
Define the Use of MapReduce?
What are combiners? When should I use a combiner in my MapReduce Job?
What is Output Format in MapReduce?
Does mapreduce programming model provide a way for reducers to communicate with each other? In a mapreduce job can a reducer communicate with another reducer?