Kettle reported an error and did not have permission to write files to HDFS

Caused by: org.apache.commons.vfs2.FileSystemException: Could not create file

First method.
Edit the Spoon.bat file, and add the following to line 119.
“-DHADOOP_USER_NAME=xxx” “-Dfile-encoding=UTF-8”
Note: xxx is your own user name
Second way.
hdfs dfs -chmod 777 /

Read More: