Ks3FileSystem: Hadoop File System Ks3 Implementation
KS3 URI Format ks3://[AccessKey]:[AccessSecret]@[Bucket]/[objectKey]
About folder structure:
using object key a/b.txt to represent a file within folder
There will not having fake object to represent folder if the folder is not empty;
but if a folder is empty, then will have a empty object to represent the folder, i.e.