r - Hadoop Stream Job Error (Type mismatch in key from map) -

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I know there are some similar problems reported. In my case, in my case, I wrote regular jobs in R. I know that there is a way to directly access ROP to use RHDOP.

I execute my hopping job: 

  $ hadoop jar / usr / lib / hasoop -0.20-mapreadus / dischab / streaming / thoupe-streaming-2.0. 0-MR1-CDH 4.1.1.JJ-Input Test / Test_R_MR-Output RMR7 -File ~ / Mapper R-file ~ / reducer R

The error looks like the following:

error = "java.io.IOException: type mismatch in key from map: expected org.apache. Hasoop.io.Text, the recipient org.apache.hadoop.io.LongWritable

Does anyone have any clue how to fix it on Mapper / Reduce R? >

Thank you.


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