Hadoop MapReduce Wordcount python execution error

2017-11-01T02:54:27

I am trying to execute a python MapReduce wordcount Program

I take it from writing a Hadoop MapReduce program in python just to try to understand how it works but the problem always is Job not successful!

I execute mapper.py and reducer.py using this library in Cloudera VM

/usr/lib/hadoop-0.20-mapreduce/contrib/streaming/hadoop-streaming-2.6.0-mr1-cdh5.12.0.jar

execute command:

hadoop jar /usr/lib/hadoop-0.20-mapreduce/contrib/streaming/hadoop-streaming-2.6.0-mr1-cdh5.12.0.jar
-Dmaperd.reduce, tasks=1
-file wordcount/mapper.py 
-mapper mapper.py -file wordcount/reducer.py
-reducer reducer.py
-input myinput/test.txt
-output output

enter image description here

Copyright License:
Author:「Sakhri Houssem」,Reproduced under the CC 4.0 BY-SA copyright license with link to original source & disclaimer.
Link to:https://stackoverflow.com/questions/47042703/hadoop-mapreduce-wordcount-python-execution-error

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Copyright License:Reproduced under the CC 4.0 BY-SA copyright license with link to original source & disclaimer.