Explain the Reducer's Sort phase?
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When the reducers are are started in a mapreduce job?
Explain job scheduling through JobTracker
How is reporting controlled in hadoop?
what is a Task Tracker in Hadoop?
What is RecordReader in a Map Reduce?
How do reducers communicate with each other?
What combiners are and when you should use a combiner in a mapreduce job?
What does a 'MapReduce Partitioner' do?
Explain about the basic parameters of mapper and reducer function
In MapReduce Data Flow, when Combiner is called?
Can we set the number of reducers to zero in MapReduce?
What is the relation between MapReduce and Hive?
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