<aside> 💡 hadoop fs -appendToFile <localsrc> [localsrc]... <dst>

</aside>

~/ewell/hadoop/demo  hadoop fs -appendToFile localfile hdfs://localhost:8020/demo.txt
2020-11-10 15:23:53,382 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
 ~/ewell/hadoop/demo  hadoop fs -cat /demo.txt

2020-11-10 15:24:19,437 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
张三 1
李四 2
王五 4张三 1
李四 2

将本地的文件追加到hadoop文件系统中

hadoop fs -appendToFile localfile /demo.txt