What are the four essential parameters of a mapper?
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What is reduce side join in mapreduce?
Difference between mapreduce and spark
What is Output Format in MapReduce?
What are the data components used by Hadoop?
What can be optimum value for Reducer?
Is it mandatory to set input and output type/format in MapReduce?
what are the most common input formats defined in Hadoop?
Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?
how JobTracker schedules a task ?
What is the difference between an RDBMS and Hadoop?
How does inputsplit in mapreduce determines the record boundaries correctly?
Define the Use of MapReduce?
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