What is the Job interface in MapReduce framework?
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what is Speculative Execution?
How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?
Explain task granularity
Explain about the partitioning, shuffle and sort phase
What is identity mapper and identity reducer?
How does MapReduce framework view its input internally?
What is a combiner and where you should use it?
What is the relation between MapReduce and Hive?
what daemons run on a master node and slave nodes?
How many times combiner is called on a mapper node in Hadoop?
Where is the output of Mapper written in Hadoop?
What is the difference between map and reduce?
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