import org.apache.hadoop.fs.contract.AbstractFSContract; //导入依赖的package包/类
@Override
protected AbstractFSContract createContract(Configuration conf) {
  return new LocalFSContract(conf);
}
 

import org.apache.hadoop.fs.contract.AbstractFSContract; //导入依赖的package包/类
@Override
protected AbstractFSContract createContract(Configuration conf) {
  return new FTPContract(conf);
}
 

import org.apache.hadoop.fs.contract.AbstractFSContract; //导入依赖的package包/类
@Override
protected AbstractFSContract createContract(Configuration conf) {
  return new RawlocalFSContract(conf);
}
 

import org.apache.hadoop.fs.contract.AbstractFSContract; //导入依赖的package包/类
@Override
protected AbstractFSContract createContract(Configuration conf) {
  return new S3AContract(conf);
}
 

import org.apache.hadoop.fs.contract.AbstractFSContract; //导入依赖的package包/类
@Override
protected AbstractFSContract createContract(Configuration conf) {
  return new HDFSContract(conf);
}
 

import org.apache.hadoop.fs.contract.AbstractFSContract; //导入依赖的package包/类
@Override
protected AbstractFSContract createContract(Configuration conf) {
  return new SwiftContract(conf);
}