default scheme to file in fsspec

Author: kevinjqliu

pyiceberg/io/fsspec.py

@@ -299,7 +299,8 @@ def new_input(self, location: str) -> FsspecInputFile:
             FsspecInputFile: An FsspecInputFile instance for the given location.
         """
         uri = urlparse(location)
-        fs = self.get_fs(uri.scheme)
+        scheme = uri.scheme or "file"
+        fs = self.get_fs(scheme)
         return FsspecInputFile(location=location, fs=fs)
 
     def new_output(self, location: str) -> FsspecOutputFile: