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What is the relation between MapReduce and Hive?
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Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
What are the fundamental configurations parameters specified in map reduce?
What are the key differences between Pig vs MapReduce?
How would you tackle calculating the number of unique visitors for each hour by mining a huge apache log? You can use post processing on the output of the mapreduce job.
Illustrate a simple example of the working of MapReduce.
What is a "reducer" in Hadoop?
What are the data components used by Hadoop?
What is identity mapper and chain mapper?
mapper or reducer?
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?
what is a Task Tracker in Hadoop?
Clarify what combiners are and when you should utilize a combiner in a map reduce job?
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