what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
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What is a "map" in Hadoop?
Where sorting is done in Hadoop MapReduce Job?
Explain what you understand by speculative execution
How many numbers of reducers run in Map-Reduce Job?
In Hadoop, which file controls reporting in Hadoop?
What is mapper in map reduce?
Where is Mapper output stored?
Explain what is distributed cache in mapreduce framework?
what is a sequence file in Hadoop?
Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?
Explain how do ‘map’ and ‘reduce’ work?
What are the various configuration parameters required to run a mapreduce job?
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