when do reducers play their role in a mapreduce task?
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What is Mapper in Hadoop MapReduce?
What are the key differences between Pig vs MapReduce?
what daemons run on a master node and slave nodes?
In MapReduce how to change the name of the output file from part-r-00000?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
In mapreduce what is a scarce system resource? Explain?
How many Reducers run for a MapReduce job?
What is the Job interface in MapReduce framework?
What is the sequence of execution of Mapper, Combiner, and Partitioner in MapReduce?
how JobTracker schedules a task ?
What is the default value of map and reduce max attempts?
Is YARN a replacement of Hadoop MapReduce?
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