How do ‘map’ and ‘reduce’ work?
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Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
what is a Task Tracker in Hadoop?
Explain how do ‘map’ and ‘reduce’ work?
What is Reducer in MapReduce?
How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?
what are the main configuration parameters that user need to specify to run Mapreduce Job ?
What is the key- value pair in MapReduce?
Where sorting is done on mapper node or reducer node in MapReduce?
Describe what happens to a mapreduce job from submission to output?
How to write MapReduce Programs?
Can there be no Reducer?
What is SequenceFileInputFormat?
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