what is storage and compute nodes?
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What is the default input type in MapReduce?
What is a "map" in Hadoop?
How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?
Write a short note on the disadvantages of mapreduce
how JobTracker schedules a task ?
Compare Pig vs Hive vs Hadoop MapReduce?
What is MapReduce?
What is the problem with the small file in Hadoop?
what is NameNode in Hadoop?
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?
When Namenode is down what happens to job tracker?
Explain what are the basic parameters of a mapper?