public void copyToLocalFile(boolean delSrc, Path src, Path dst)
    throws IOException {
    fs.copyToLocalFile(delSrc, src, dst);
  }
public void copyToLocalFile ( boolean delSrc , Path src , Path dst ) throws IOException { fs . copyToLocalFile ( delSrc , src , dst ) ; }
The src file is under FS, and the dst is on the local disk.
Copy it from FS control to the local dst name.
delSrc indicates if the src will be removed or not.