Mention what is the hadoop mapreduce apis contract for a key and value class?
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What is a TaskInstance?
how JobTracker schedules a task ?
What is the difference between Job and Task in MapReduce?
What is heartbeat in hdfs?
What is the use of InputFormat in MapReduce process?
What are the advantages of using mapreduce with hadoop?
What is partitioning in MapReduce?
When is the reducers are started in a MapReduce job?
What do you understand by the term Straggler ?
Define MapReduce?
What MapReduce framework consists of?
mapper or reducer?