Hadoop上传、下载以及word count简单示例

1.启动 start-dfs.sh?

启动start-yarn.sh

2.输入http://hadoop-0000:50070/，查看HDFS

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3. ?上传一个文件，比如JDK

hadoop fs -put jdk-8u77-linux-x64.tar.gz hdfs://hadoop-0000:9000/

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4.查看HDFS

5.下载一个文件

hadoop fs -get hdfs://hadoop-0000:9000/jdk-8u77-linux-x64.tar.gz

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6. 创建两个目录

hadoop fs -mkdir /wordcount
hadoop fs -mkdir /wordcount/input

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7.新建一个文件，输入一些数据，保存

上传

hadoop fs -put wordcount.txt /wordcount/input

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8.测试wordcount

hadoop jar hadoop-mapreduce-examples-2.6.4.jar wordcount /wordcount/input /wordcount/output

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9.查看输出

hadoop fs -ls /wordcount/output

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10.查看结果

hadoop fs -cat /wordcount/output/part-r-00000

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Hadoop上传、下载以及word count简单示例

原文：http://agilestyle.iteye.com/blog/2289530