HDFS -- how to delete files from HDFS

You can use the command line bin/Hadoop fs-rm (r) to delete files (folders) on hdfs)

You can also use HDFS APIs. As follows:

Import java.net. URI;
Import org. apache. hadoop. conf. Configuration;
Import org. apache. hadoop. fs. FileSystem;
Import org. apache. hadoop. fs. Path;
Public class FileDelete
{
Public static void main (String [] args) throws Exception
{
If (args. length! = 1 ){
System. out. println ("Usage filedelete <target> ");
System. exit (1 );
}
Configuration conf = new Configuration ();
FileSystem hdfs = FileSystem. get (URI. create (args [0]), conf );
Hdfs. delete (new Path (args [0]), false );
}
}

Copy local files to HDFS

Download files from HDFS to local

Upload local files to HDFS

Common commands for HDFS basic files

Introduction to HDFS and MapReduce nodes in Hadoop

Hadoop practice Chinese version + English version + Source Code [PDF]

Hadoop: The Definitive Guide (PDF]