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what is Speculative Execution?
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Define Writable data types in MapReduce?
Is it mandatory to set input and output type/format in MapReduce?
What happens if the quantity of the reducer is 0 in mapreduce?
What is the relationship between Job and Task in Hadoop?
Is it possible to rename the output file?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
Which are the methods in the mapper interface?
what job does the conf class do?
Where sorting is done on mapper node or reducer node in MapReduce?
How to create custom key and custom value in MapReduce Job?
When is it not recommended to use MapReduce paradigm for large scale data processing?
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