how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?
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what job does the conf class do?
A number of combiners can be changed or not in MapReduce?
With the help of two examples name the map and reduce function purpose
What is difference between a MapReduce InputSplit and HDFS block
Whether the output of mapper or output of partitioner written on local disk?
Detail description of the Reducer phases?
what is NameNode in Hadoop?
What is a TaskInstance?
How many InputSplits is made by a Hadoop Framework?
What is a combiner and where you should use it?
What platform and Java version is required to run Hadoop?
What main configuration parameters are specified in mapreduce?
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