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What is mapper in map reduce?
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Explain the Reducer's reduce phase?
What do you understand by mapreduce?
What is the difference between map and reduce?
Is Mapreduce Required For Impala? Will Impala Continue To Work As Expected If Mapreduce Is Stopped?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
Difference between mapreduce and spark
How to set the number of reducers?
What is an identity mapper and identity reducer?
What is the best way to copy files between HDFS clusters?
Name job control options specified by mapreduce.
Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?
What are the various InputFormats in Hadoop?
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