Define Writable data types in MapReduce?
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For a job in Hadoop, is it possible to change the number of mappers to be created?
Define speculative execution?
Is YARN a replacement of Hadoop MapReduce?
What is the Job interface in MapReduce framework?
what is Speculative Execution?
What can be optimum value for Reducer?
what are the most common input formats defined in Hadoop?
How to set mappers and reducers for MapReduce jobs?
Explain about the basic parameters of mapper and reducer function
what is a Task Tracker in Hadoop?
what are the three modes in which Hadoop can be run?
What is a RecordReader in Hadoop MapReduce?
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