标签：.sh ice creat container highlight sql pac 文件夹 cells
通过hadoop上的hive完成WordCount
启动hadoop
ssh localhost cd /usr/local/hadoop ./sbin/start-dfs.sh cd /usr/local/hive/lib service mysql start start-all.sh
Hdfs上创建文件夹
hdfs dfs -mkdir test1 hdfs dfs -ls /user/hadoop
上传文件至hdfs
hdfs dfs -put ./try.txt test1 hdfs dfs -ls /user/hadoop/test1
启动Hive
hive
创建原始文档表
create table docs(line string)
导入文件内容到表docs并查看
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load data inpath ‘/user/hadoop/tese1/try.txt‘ overwrite into table docsselect * from docs |
用HQL进行词频统计，结果放在表word_count里
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create table word_count as select word,count(1) as count from (select explode(split(line," ")) as word from docs) word group by word order by word; |
查看统计结果
show tables; select * from word_count;
标签：.sh ice creat container highlight sql pac 文件夹 cells
原文地址：https://www.cnblogs.com/zd983886992/p/9047925.html
