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Does Partitioner run in its own JVM or shares with another process?
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What is a mapreduce algorithm?
Is it mandatory to set input and output type/format in MapReduce?
What are the four basic parameters of a reducer?
What is the sequence of execution of map, reduce, recordreader, split, combiner, partitioner?
In Hadoop what is InputSplit?
What are the primary phases of a Reducer?
How to specify more than one directory as input to the MapReduce Job?
What is the Reducer used for?
In Hadoop, which file controls reporting in Hadoop?
How much space will the split occupy in Mapreduce?
Map reduce jobs take too long. What can be done to improve the performance of the cluster?
What is the data storage component used by Hadoop?
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