Explanation:Hadoop MapReduce comes bundled with a library of generally useful mappers, reducers, and partitioners. 5. Point out the wrong statement :
A. It is legal to set the number of reduce-tasks to zero if no reduction is desired
B. The outputs of the map-tasks go directly to the FileSystem
C. The Mapreduce framework does not sort the map-outputs before writing them out to the FileSystem
D. None of the mentioned
Answer:A
Explanation:Hadoop MapReduce comes bundled with a library of generally useful mappers, reducers, and partitioners. 5. Point out the wrong statement :
A. It is legal to set the number of reduce-tasks to zero if no reduction is desired B. The outputs of the map-tasks go directly to the FileSystem C. The Mapreduce framework does not sort the map-outputs before writing them out to the FileSystem D. None of the mentioned
Explanation:Outputs of the map-tasks go directly to the FileSystem, into the output path set by setOutputPath(Path). 6. __________ is the primary interface for a user to describe a MapReduce job to the Hadoop framework for execution.