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关于关键词 "Python" 的检测结果,共 7
清无 | 2017-01-07 12:29:21 | 阅读(630) | 评论(0)
1.启动hadoop, start-all.sh 启动hadoop2. copy local example data to hdfs     bin/hadoop jar contrib/streaming/hadoop-*streaming*.jar -file /home/hduser/reducer.py -reducer /home/hduser/reducer.py  bin/hadoop dfs -cat /user/hduser/gutenberg-output/part-00000【阅读全文】
levy-linux | 2016-03-17 17:42:57 | 阅读(890) | 评论(0)
hadoop之steaming介绍hadoop有个工具叫做steaming,能够支持python、shell、C++、PHP等其他任何支持标准输入stdin及标准输出stdout的语言,其运行原理可以通过和标准java的map-reduce程序对比来说明:使用原生java语言实现Map-reduce程序    hadoop准备好数据后,将数据传送给java的map程序 &nbs...【阅读全文】
cokeboL | 2015-12-25 15:08:30 | 阅读(0) | 评论(0)
from:http://blog.csdn.net/jthink_/article/details/42745699参考:http://blog.csdn.net/jthink_/article/details/41016909           http://blog.csdn.net/jthink_/article/details/427463971. hadoop本身是用java写的,所以用java写mapreduce是比较合适的,...【阅读全文】
9768p1 | 2014-11-26 20:24:04 | 阅读(860) | 评论(0)
自己用python写了个mapreduce程序,结果运行时候一直报错;运行命令:点击(此处)折叠或打开hadoop jar /usr/lib/hadoop-0.20/contrib/streaming/hadoop-streaming-0.20.2-cdh3u6.jar -mapper /Application/lianshuchengjin/MR/map.py -reducer /Application/lianshuchengjin/MR/reduce.py -...【阅读全文】
dsy851009 | 2014-10-22 18:35:06 | 阅读(6990) | 评论(3)
自己用python写了个mapreduce程序,结果运行时候一直报错;运行命令:点击(此处)折叠或打开hadoop jar /usr/lib/hadoop-0.20/contrib/streaming/hadoop-streaming-0.20.2-cdh3u6.jar -mapper /Application/lianshuchengjin/MR/map.py -reducer /Application/lianshuchengjin/MR/reduce.py -...【阅读全文】
Larpenteur | 2013-09-11 12:08:11 | 阅读(280) | 评论(0)
hadoop hbase job task datanode master Performance 性能【阅读全文】
squall_sw | 2013-09-10 15:03:50 | 阅读(2510) | 评论(0)
hadoop hbase job task datanode master Performance 性能【阅读全文】