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What is reduce side join in mapreduce?
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Can MapReduce program be written in any language other than Java?
What is map/reduce job in hadoop?
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.
What is the difference between Job and Task in MapReduce?
What do you mean by shuffling and sorting in MapReduce?
Write a Mapreduce Program for Character Count ?
In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?
What is the key- value pair in MapReduce?
How does MapReduce framework view its input internally?
Name job control options specified by mapreduce.
How does fault tolerance work in mapreduce?
What happens when the node running the map task fails before the map output has been sent to the reducer?
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