What is the role of a MapReduce partitioner?
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Clarify what combiners are and when you should utilize a combiner in a map reduce job?
How to submit extra files(jars, static files) for Hadoop MapReduce job during runtime?
Difference between mapreduce and spark
Why can aggregation not be done in Mapper in MapReduce?
What is LazyOutputFormat in MapReduce?
What is difference between an input split and hdfs block?
What is the sequence of execution of map, reduce, recordreader, split, combiner, partitioner?
What is map/reduce job in hadoop?
Why do we need MapReduce during Pig programming?
how Hadoop is different from other data processing tools?
Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?
Is it necessary to write a mapreduce job in java?
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