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How Many Mappers And Reducers Can Run? |
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Answer» By default Hadoop can RUN 2 mappers and 2 REDUCERS in one datanode. also each node has 2 map slots and 2 reducer slots. It’s possible to change this default values in Mapreduce.xml in conf file. By default Hadoop can run 2 mappers and 2 reducers in one datanode. also each node has 2 map slots and 2 reducer slots. It’s possible to change this default values in Mapreduce.xml in conf file. |
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