What are ‘maps’ and ‘reduces’?
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What is heartbeat in hdfs?
what are the three modes in which Hadoop can be run?
How hadoop mapreduce works?
What is a map side join?
What is the sequence of execution of Mapper, Combiner, and Partitioner in MapReduce?
What is the difference between Reducer and Combiner in Hadoop MapReduce?
What does a 'MapReduce Partitioner' do?
What is sqoop in Hadoop ?
How is reporting controlled in hadoop?
what is WebDAV in Hadoop?
How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?
What is the need of key-value pair to process the data in MapReduce?