Revert "ENH: Add ORC reader (#29447)"

This reverts commit 9b202d3.

Author: jreback

doc/source/getting_started/install.rst

@@ -258,7 +258,7 @@ matplotlib                2.2.2              Visualization
 openpyxl                  2.4.8              Reading / writing for xlsx files
 pandas-gbq                0.8.0              Google Big Query access
 psycopg2                                     PostgreSQL engine for sqlalchemy
-pyarrow                   0.12.0             Parquet, ORC (requires 0.13.0), and feather reading / writing
+pyarrow                   0.12.0             Parquet and feather reading / writing
 pymysql                   0.7.11             MySQL engine for sqlalchemy
 pyreadstat                                   SPSS files (.sav) reading
 pytables                  3.4.2              HDF5 reading / writing

doc/source/reference/io.rst

@@ -98,13 +98,6 @@ Parquet
 
    read_parquet
 
-ORC
-~~~
-.. autosummary::
-   :toctree: api/
-
-   read_orc
-
 SAS
 ~~~
 .. autosummary::

doc/source/user_guide/io.rst

@@ -28,7 +28,6 @@ The pandas I/O API is a set of top level ``reader`` functions accessed like
     binary;`HDF5 Format <https://support.hdfgroup.org/HDF5/whatishdf5.html>`__;:ref:`read_hdf<io.hdf5>`;:ref:`to_hdf<io.hdf5>`
     binary;`Feather Format <https://github.com/wesm/feather>`__;:ref:`read_feather<io.feather>`;:ref:`to_feather<io.feather>`
     binary;`Parquet Format <https://parquet.apache.org/>`__;:ref:`read_parquet<io.parquet>`;:ref:`to_parquet<io.parquet>`
-    binary;`ORC Format <//https://orc.apache.org/>`__;:ref:`read_orc<io.orc>`;
     binary;`Msgpack <https://msgpack.org/index.html>`__;:ref:`read_msgpack<io.msgpack>`;:ref:`to_msgpack<io.msgpack>`
     binary;`Stata <https://en.wikipedia.org/wiki/Stata>`__;:ref:`read_stata<io.stata_reader>`;:ref:`to_stata<io.stata_writer>`
     binary;`SAS <https://en.wikipedia.org/wiki/SAS_(software)>`__;:ref:`read_sas<io.sas_reader>`;
@@ -4859,17 +4858,6 @@ The above example creates a partitioned dataset that may look like:
    except OSError:
        pass
 
-.. _io.orc:
-
-ORC
----
-
-.. versionadded:: 1.0.0
-
-Similar to the :ref:`parquet <io.parquet>` format, the `ORC Format <//https://orc.apache.org/>`__ is a binary columnar serialization
-for data frames. It is designed to make reading data frames efficient. Pandas provides *only* a reader for the
-ORC format, :func:`~pandas.read_orc`. This requires the `pyarrow <https://arrow.apache.org/docs/python/>`__ library.
-
 .. _io.sql:
 
 SQL queries
@@ -5773,3 +5761,6 @@ Space on disk (in bytes)
     24009288 Oct 10 06:43 test_fixed_compress.hdf
     24458940 Oct 10 06:44 test_table.hdf
     24458940 Oct 10 06:44 test_table_compress.hdf
+
+
+

pandas/__init__.py

@@ -168,7 +168,6 @@
     # misc
     read_clipboard,
     read_parquet,
-    read_orc,
     read_feather,
     read_gbq,
     read_html,

pandas/io/api.py

@@ -10,7 +10,6 @@
 from pandas.io.gbq import read_gbq
 from pandas.io.html import read_html
 from pandas.io.json import read_json
-from pandas.io.orc import read_orc
 from pandas.io.packers import read_msgpack, to_msgpack
 from pandas.io.parquet import read_parquet
 from pandas.io.parsers import read_csv, read_fwf, read_table

pandas/io/orc.py

@@ -167,7 +167,6 @@ class TestPDApi(Base):
         "read_table",
         "read_feather",
         "read_parquet",
-        "read_orc",
         "read_spss",
     ]