What is the use of InputFormat in MapReduce process?
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What is a partitioner and how the user can control which key will go to which reducer?
How to create a custom key and custom value in MapReduce Job?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
What is InputFormat in Hadoop MapReduce?
What is the next step after Mapper or MapTask?
How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?
How to specify more than one directory as input to the MapReduce Job?
What are mapreduce new and old apis while writing map reduce program?. Explain how it works
How to get the single file as the output from MapReduce Job?
How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?
What are the fundamental configurations parameters specified in map reduce?
How many Reducers run for a MapReduce job in Hadoop?