How to use Hadoop Python Streaming?

Mapper python file:
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Reducer python file:
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Commands:
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su - hduser
hadoop fs -mkdir /input
sudo nano /home/sanket/input
hadoop fs -put /home/sanket/input /input
create folder wordcount
sudo chmod -R 777 /home/sanket/wordcount
cd /home/sanket/wordcount

mapred streaming \
-input /input/input \
-output /output \