mapreduce - How do i set reducer output name in Hadoop? -

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I have a job that will emit 900,000 different outputs. Each one of them should be identified by a specific unique name ... that is, "name" I have on map otputaki, how can I reduce it to the map?

You can use multiple output , you will find an example in which you Almost required, you have to replace it with the generFileName function: 

  string generatedFilename (KK, VV) {Return K.OustString (); }

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