How do Hadoop MapReduce works?
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A number of combiners can be changed or not in MapReduce?
what is WebDAV in Hadoop?
what is a Task Tracker in Hadoop?
What are the main components of MapReduce Job?
What is the key- value pair in Hadoop MapReduce?
How to create a custom key and custom value in MapReduce Job?
What is shuffling and sorting in mapreduce?
Mention what is the next step after mapper or maptask?
Mention what is the hadoop mapreduce apis contract for a key and value class?
Explain the general mapreduce algorithm
what is Speculative Execution?
What do sorting and shuffling do?