import org.apache.hadoop.fs.contract.ContractOptions; //导入依赖的package包/类
/**
 *  tweak some of the contract parameters based on the local system
 *  state
 */
protected void adjustContractToLocalEnvironment() {
  if (Shell.WINDOWS) {
    //NTFS doesn't do case sensitivity, and its permissions are ACL-based
    getConf().setBoolean(getConfKey(ContractOptions.IS_CASE_SENSITIVE), false);
    getConf().setBoolean(getConfKey(ContractOptions.SUPPORTS_UNIX_PERMISSIONS), false);
  } else if (ContractTestUtils.isOSX()) {
    //OSX HFS+ is not case sensitive
    getConf().setBoolean(getConfKey(ContractOptions.IS_CASE_SENSITIVE),
                         false);
  }
}
 

import org.apache.hadoop.fs.contract.ContractOptions; //导入依赖的package包/类
@Override
public void init() throws IOException {
  super.init();
  Assert.assertTrue("contract options not loaded",
                    isSupported(ContractOptions.IS_CASE_SENSITIVE, false));
}