HDFS追加文件内容和覆盖文件的命令示例

一、准备工作

echo "local">local.csv
hadoop fs -put local.csv /home/user/temp/
echo "test .." >text.csv
hadoop fs -cat /home/user/temp/local.csv
local

二、追加

hadoop fs -appendToFile text.csv /home/user/temp/local.csv
hadoop fs -cat /home/user/temp/local.csv                  
local
test ..

三、覆盖

hadoop fs -copyFromLocal -f local.csv /home/user/temp/local.csv
hadoop fs -cat /home/user/temp/local.csv                       
local