What is mapper in map reduce?
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how indexing in HDFS is done?
What are the identity mapper and reducer in MapReduce?
What are the various InputFormats in Hadoop?
Explain the Reducer's Sort phase?
What is the need of MapReduce in Hadoop?
What are the four essential parameters of a mapper?
how JobTracker schedules a task ?
When is it not recommended to use MapReduce paradigm for large
how to proceed to write your first mapreducer program?
What is the difference between Job and Task in MapReduce?
What are the main components of MapReduce Job?
What is Data Locality in Hadoop?