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demo备忘

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WordCount,小demo备忘

/usr/local/hadoop# bin/hadoop namenode -format

/usr/local/hadoop# bin/start-all.sh

/usr/local/hadoop# jps

/usr/local/hadoop# sudo mkdir test

/usr/local/hadoop# la

/usr/local/hadoop# echo "**">*.txt

/usr/local/hadoop# bin/hadoop fs -mkdir in

/usr/local/hadoop# bin/hadoop fs -ls

/usr/local/hadoop# bin/hadoop fs -put /usr/local/hadoop/*.txt in

/usr/local/hadoop# bin/hadoop fs -ls in

/usr/local/hadoop# bin/hadoop jar hadoop-0.20.2-examples.jar wordcount in out

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