Clarify what is shuffling in map reduce?
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What is the role of a MapReduce partitioner?
Why do we need MapReduce during Pig programming?
In MapReduce how to change the name of the output file from part-r-00000?
What is the difference between Job and Task in MapReduce?
In Map Reduce why map write output to Local Disk instead of HDFS?
What is the process of changing the split size if there is limited storage space on Commodity Hardware?
What is identity mapper and reducer? In which cases can we use them?
What is shuffling and sorting in mapreduce?
What is InputFormat in Hadoop MapReduce?
How to submit extra files(jars, static files) for Hadoop MapReduce job during runtime?
How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?
What is difference between an input split and hdfs block?