closes pandas-dev#44914 by changing the path object to string if it i…

…s of io.BufferedWriter type.

doc/source/whatsnew/v1.4.0.rst

@@ -935,6 +935,7 @@ I/O
 - Bug in :func:`read_json` raising ``ValueError`` when attempting to parse json strings containing "://" (:issue:`36271`)
 - Bug in :func:`read_csv` when ``engine="c"`` and ``encoding_errors=None`` which caused a segfault (:issue:`45180`)
 - Bug in :func:`read_csv` an invalid value of ``usecols`` leading to an un-closed file handle (:issue:`45384`)
+- Bug in :func:`read_parquet` when ``engine="pyarrow"`` which caused partial write to disk when column of unsupported datatype was passed (:issue:`44914`)
 
 Period
 ^^^^^^

pandas/io/parquet.py

@@ -180,6 +180,9 @@ def write(
             mode="wb",
             is_dir=partition_cols is not None,
         )
+        if isinstance(path_or_handle, WriteBuffer):
+            path_or_handle = path_or_handle.raw.name
+
         try:
             if partition_cols is not None:
                 # writes to multiple files under the given path