Does mapreduce programming model provide a way for reducers to communicate with each other? In a mapreduce job can a reducer communicate with another reducer?
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what is "map" and what is "reducer" in Hadoop?
what is a sequence file in Hadoop?
What is a mapreduce algorithm?
When is it suggested to use a combiner in a MapReduce job?
what is a Task Tracker in Hadoop?
What is Counter in MapReduce?
What is shuffling and sorting in mapreduce?
Can we set the number of reducers to zero in MapReduce?
Explain the difference between a MapReduce InputSplit and HDFS block?
how JobTracker schedules a task ?
How does MapReduce framework view its input internally?
What is the input type/format in MapReduce by default?
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