Repository: modin-project/modin
Pull request: DOCS-#4224: Add info about Omnisci in Supported APIs sections
Signed-off-by: izamyati <igor.zamyatin@intel.com>

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## What do these changes do?

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Problem statement:
Add info about Omnisci in Supported APIs sections
### System information
- **OS Platform and Distribution (e.g., Linux Ubuntu 16.04)**:
- **Modin version** (`modin.__version__`):
- **Python version**:
- **Code we can use to reproduce**:

<!--
You can obtain the Modin version with

python -c "import modin; print(modin.__version__)"
-->

### Describe the problem
<!-- Describe the problem clearly here. -->
Now Supported API section content doesn't specify  which engine supports what API method. Let's fix this and fill current status for Omnisci


### Source code / logs
<!-- Include any logs or source code that would be helpful to diagnose the problem. If including tracebacks, please include the full traceback. Large logs and files should be attached. Try to provide a reproducible test case that is the bare minimum necessary to generate the problem. -->

Hints from issue discussion:

Commit message: Some more updates for utilities part

Signed-off-by: izamyati <igor.zamyatin@intel.com>

Patch to review:
diff --git a/docs/supported_apis/dataframe_supported.rst b/docs/supported_apis/dataframe_supported.rst
index cf414a51d24..dc495593d4f 100644
--- a/docs/supported_apis/dataframe_supported.rst
+++ b/docs/supported_apis/dataframe_supported.rst
@@ -7,10 +7,14 @@ of an operation that is listed as not implemented, feel free to open an issue on
 also welcome!
 
 The following table is structured as follows: The first column contains the method name.
-The second column is a flag for whether or not there is an implementation in Modin for
+The second column contains link to a description of corresponding pandas method.
+The third column is a flag for whether or not there is an implementation in Modin for
 the method in the left column. ``Y`` stands for yes, ``N`` stands for no, ``P`` stands
 for partial (meaning some parameters may not be supported yet), and ``D`` stands for
 default to pandas.
+**Currently third column reflects implementation status for Ray and Dask engines. By default support of a method
+in the Omnisci engine could be treated as ``D`` unless ``Notes`` column contains additional information. Similarly,
+by default ``Notes`` contains information about ``Ray`` and ``Dask`` engines unless ``Omnisci`` explicitly mentioned.**
 
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | DataFrame method           | pandas Doc link           | Implemented? (Y/N/P/D) | Notes for Current implementation                   |
@@ -19,7 +23,9 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``abs``                    | `abs`_                    | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``add``                    | `add`_                    | Y                      | Shuffles data in operations between DataFrames     |
+| ``add``                    | `add`_                    | Y                      | **Ray** and **Dask**:Shuffles data in operations   |
+|                            |                           |                        | between DataFrames                                 |
+|                            |                           |                        | **Omnisci**:``Y``                                  |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``add_prefix``             | `add_prefix`_             | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -35,7 +41,7 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``any``                    | `any`_                    | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``append``                 | `append`_                 | Y                      |                                                    |
+| ``append``                 | `append`_                 | Y                      | **Omnisci**:``Y``?                                 |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``apply``                  | `apply`_                  | Y                      | See ``agg``                                        |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -47,7 +53,7 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``assign``                 | `assign`_                 | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``astype``                 | `astype`_                 | Y                      |                                                    |
+| ``astype``                 | `astype`_                 | Y                      | **Omnisci**:``P``, ``int`` and ``float`` supported |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``at``                     | `at`_                     | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -80,7 +86,8 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``corrwith``               | `corrwith`_               | D                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``count``                  | `count`_                  | Y                      |                                                    |
+| ``count``                  | `count`_                  | Y                      | **Omnisci**:``P``, only default params supported,  |
+|                            |                           |                        | otherwise ``D``                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``cov``                    | `cov`_                    | Y                      | Covariance floating point precision may slightly   |
 |                            |                           |                        | differ from pandas.                                |
@@ -103,15 +110,16 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``dot``                    | `dot`_                    | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``drop``                   | `drop`_                   | Y                      |                                                    |
+| ``drop``                   | `drop`_                   | Y                      | **Omnisci**:``P``, ``D`` for row drop              |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``droplevel``              | `droplevel`_              | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``drop_duplicates``        | `drop_duplicates`_        | D                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``dropna``                 | `dropna`_                 | Y                      |                                                    |
+| ``dropna``                 | `dropna`_                 | Y                      | **Omnisci**:``P``, same as ``drop``,               |
+|                            |                           |                        | also ``D`` for ``thresh`` and ``axis`` parameters  |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``dtypes``                 | `dtypes`_                 | Y                      |                                                    |
+| ``dtypes``                 | `dtypes`_                 | Y                      | **Omnisci**:``Y`` ?                                |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``duplicated``             | `duplicated`_             | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -133,6 +141,7 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``fillna``                 | `fillna`_                 | P                      | ``value`` parameter of type DataFrame defaults to  |
 |                            |                           |                        | pandas                                             |
+|                            |                           |                        | **Omnisci**:``P``                                  |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``filter``                 | `filter`_                 | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -150,7 +159,9 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``get``                    | `get`_                    | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``groupby``                | `groupby`_                | Y                      |   Not yet optimized for all operations             |
+| ``groupby``                | `groupby`_                | Y                      | Not yet optimized for all operations               |
+|                            |                           |                        | **Omnisci**:``P``, ``count``, ``sum``, ``size``    |
+|                            |                           |                        | supported, otherwise ``D``                         |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``gt``                     | `gt`_                     | Y                      | See ``add``                                        |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -164,7 +175,7 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``idxmin``                 | `idxmin`_                 | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``iloc``                   | `iloc`_                   | Y                      |                                                    |
+| ``iloc``                   | `iloc`_                   | Y                      | **Omnisci**:``P``?                                 |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``infer_objects``          | `infer_objects`_          | D                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -203,7 +214,8 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``le``                     | `le`_                     | Y                      | See ``add``                                        |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``loc``                    | `loc`_                    | Y                      | We do not support: boolean array, callable         |
+| ``loc``                    | `loc`_                    | P                      | We do not support: boolean array, callable         |
+|                            |                           |                        | **Omnisci**:``P``?                                 |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``lookup``                 | `lookup`_                 | D                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -213,10 +225,13 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``mask``                   | `mask`_                   | D                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``max``                    | `max`_                    | Y                      |                                                    |
+| ``max``                    | `max`_                    | Y                      | **Omnisci**:``P``, only default params supported,  |
+|                            |                           |                        | otherwise ``D``                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``mean``                   | `mean`_                   | P                      | Modin defaults to pandas if given the ``level``    |
 |                            |                           |                        | param.                                             |
+|                            |                           |                        | **Omnisci**:``P``, ``D`` for ``level``, ``axis``,  |
+|                            |                           |                        | 'skipna' and 'numeric_only' params                 |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``median``                 | `median`_                 | P                      | Modin defaults to pandas if given the ``level``    |
 |                            |                           |                        | param.                                             |
@@ -232,10 +247,14 @@ default to pandas.
 |                            |                           |                        | ``right_index=False`` or ``left_index=False``      |
 |                            |                           |                        | and ``right_index=True``.                          |
 |                            |                           |                        | Defaults to pandas otherwise.                      |
+|                            |                           |                        | **Omnisci**: ``P``, only non-index joins for       |
+|                            |                           |                        | ``how=left`` and ``how=inner`` with                |
+|                            |                           |                        | explicit 'on' are supported                        |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``min``                    | `min`_                    | Y                      |                                                    |
+| ``min``                    | `min`_                    | Y                      | **Omnisci**:``P``, only default params supported,  |
+|                            |                           |                        | otherwise ``D``                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``mod``                    | `mod`_                    | Y                      |                                                    |
+| ``mod``                    | `mod`_                    | Y                      | See ``add``                                        |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``mode``                   | `mode`_                   | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -255,7 +274,8 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``nsmallest``              | `nsmallest`_              | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``nunique``                | `nunique`_                | Y                      |                                                    |
+| ``nunique``                | `nunique`_                | Y                      | **Omnisci**:``P``, no support for axis!=0 and      |
+|                            |                           |                        | dropna=False                                       |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``pct_change``             | `pct_change`_             | D                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -270,6 +290,7 @@ default to pandas.
 | ``pop``                    | `pop`_                    | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``pow``                    | `pow`_                    | Y                      | See ``add``                                        |
+|                            |                           |                        | **Omnisci**:``N``                                  |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``prod``                   | `prod`_                   | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -279,11 +300,11 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``query``                  | `query`_                  | P                      | Local variables not yet supported                  |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``radd``                   | `radd`_                   | Y                      | See ``add``                                        |
+| ``radd``                   | `radd`_                   | Y                      | See ``add``; **Omnisci**:``N``                     |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``rank``                   | `rank`_                   | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``rdiv``                   | `rdiv`_                   | Y                      | See ``add``                                        |
+| ``rdiv``                   | `rdiv`_                   | Y                      | See ``add``; **Omnisci**:``N``                     |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``reindex``                | `reindex`_                | Y                      | Shuffles data                                      |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -299,23 +320,23 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``resample``               | `resample`_               | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``reset_index``            | `reset_index`_            | Y                      |                                                    |
+| ``reset_index``            | `reset_index`_            | Y                      | **Omnisci**:``P``, ``D`` for ``level`` parameter   |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``rfloordiv``              | `rfloordiv`_              | Y                      | See ``add``                                        |
+| ``rfloordiv``              | `rfloordiv`_              | Y                      | See ``add``; **Omnisci**:``N``                     |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``rmod``                   | `rmod`_                   | Y                      | See ``add``                                        |
+| ``rmod``                   | `rmod`_                   | Y                      | See ``add``; **Omnisci**:``N``                     |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``rmul``                   | `rmul`_                   | Y                      | See ``add``                                        |
+| ``rmul``                   | `rmul`_                   | Y                      | See ``add``; **Omnisci**:``N``                     |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``rolling``                | `rolling`_                | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``round``                  | `round`_                  | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``rpow``                   | `rpow`_                   | Y                      | See ``add``                                        |
+| ``rpow``                   | `rpow`_                   | Y                      | See ``add``; **Omnisci**:``N``                     |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``rsub``                   | `rsub`_                   | Y                      | See ``add``                                        |
+| ``rsub``                   | `rsub`_                   | Y                      | See ``add``; **Omnisci**:``N``                     |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``rtruediv``               | `rtruediv`_               | Y                      | See ``add``                                        |
+| ``rtruediv``               | `rtruediv`_               | Y                      | See ``add``; **Omnisci**:``N``                     |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``sample``                 | `sample`_                 | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -328,7 +349,7 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``set_index``              | `set_index`_              | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``shape``                  | `shape`_                  | Y                      |                                                    |
+| ``shape``                  | `shape`_                  | Y                      | **Omnisci**:``Y``                                  |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``shift``                  | `shift`_                  | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -341,7 +362,7 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``sort_index``             | `sort_index`_             | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``sort_values``            | `sort_values`_            | Y                      | Shuffles data                                      |
+| ``sort_values``            | `sort_values`_            | Y                      | Shuffles data; **Omnisci**:``Y``                   |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``sparse``                 | `sparse`_                 | N                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
@@ -356,9 +377,10 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``sub``                    | `sub`_                    | Y                      | See ``add``                                        |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``subtract``               | `subtract`_               | Y                      | See ``add``                                        |
+| ``subtract``               | `subtract`_               | Y                      | See ``add``; **Omnisci**:``N``                     |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``sum``                    | `sum`_                    | Y                      |                                                    |
+| ``sum``                    | `sum`_                    | Y                      | **Omnisci**:``P``, only default params supported,  |
+|                            |                           |                        | otherwise ``D``                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``swapaxes``               | `swapaxes`_               | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
diff --git a/docs/supported_apis/index.rst b/docs/supported_apis/index.rst
index 7863a7f4f53..894eaa395e6 100644
--- a/docs/supported_apis/index.rst
+++ b/docs/supported_apis/index.rst
@@ -9,7 +9,7 @@ To view the docs for the most recent release, check that you're viewing the
 `stable version`_ of the docs.
 
 In order to install the latest version of Modin, follow the directions found on the
-:doc:`installation page </getting_started/index>`.
+:doc:`installation page </getting_started/installation>`.
 
 Questions on implementation details
 -----------------------------------
diff --git a/docs/supported_apis/io_supported.rst b/docs/supported_apis/io_supported.rst
index 422c6edff1e..812f23a54a5 100644
--- a/docs/supported_apis/io_supported.rst
+++ b/docs/supported_apis/io_supported.rst
@@ -12,11 +12,22 @@ The second column is a flag for whether or not there is an implementation in Mod
 the method in the left column. ``Y`` stands for yes, ``N`` stands for no, ``P`` stands
 for partial (meaning some parameters may not be supported yet), and ``D`` stands for
 default to pandas.
+**Currently second column reflects implementation status for ``Ray`` and ``Dask`` engines. By default support of a method
+in the ``Omnisci`` engine could be treated as ``D`` unless ``Notes`` column contains additional information.**
 
 +--------------------+---------------------------------+----------------------------------------------------+
 | IO method          | Modin Implementation? (Y/N/P/D) | Notes for Current implementation                   |
 +--------------------+---------------------------------+----------------------------------------------------+
-| `read_csv`_        | Y                               |                                                    |
+| `read_csv`_        | Y                               | **Omnisci**: ``P``, only basic cases and parameters|
+|                    |                                 | supported: ``filepath_or_buffer`` can be local file|
+|                    |                                 | only, ``sep``, ``delimiter``,  ``header`` (partly) |
+|                    |                                 | ``names``, ``usecols``, ``dtype``,                 |
+|                    |                                 | ``true/false_values``, ``skiprows`` (partly)       |
+|                    |                                 | ``skip_blank_lines`` (partly), ``parse_dates``     |
+|                    |                                 | (partly), ``compression`` (infered automatically,  |
+|                    |                                 | should not be specified), ``quotechar``,           |
+|                    |                                 | ``escapechar``, ``doublequote``,                   |
+|                    |                                 | ``delim_whitespace``                               |
 +--------------------+---------------------------------+----------------------------------------------------+
 | `read_table`_      | Y                               |                                                    |
 +--------------------+---------------------------------+----------------------------------------------------+
diff --git a/docs/supported_apis/series_supported.rst b/docs/supported_apis/series_supported.rst
index e2b85be9c04..d77150176e5 100644
--- a/docs/supported_apis/series_supported.rst
+++ b/docs/supported_apis/series_supported.rst
@@ -12,13 +12,16 @@ the method in the left column. ``Y`` stands for yes, ``N`` stands for no, ``P``
 for partial (meaning some parameters may not be supported yet), and ``D`` stands for
 default to pandas. To learn more about the implementations that default to pandas, see
 the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
+**Currently second column reflects implementation status for ``Ray`` and ``Dask`` engines. By default support of a method
+in the ``Omnisci`` engine could be treated as ``D`` unless ``Notes`` column contains additional information. Similarly,
+by default ``Notes`` contains information about ``Ray`` and ``Dask`` engines unless ``Omnisci`` explicitly mentioned.**
 
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | Series method               | Modin Implementation? (Y/N/P/D) | Notes for Current implementation                   |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``abs``                     | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``add``                     | Y                               |                                                    |
+| ``add``                     | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``add_prefix``              | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -34,7 +37,7 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``any``                     | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``append``                  | Y                               |                                                    |
+| ``append``                  | Y                               | **Omnisci**:``Y``?                                 |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``apply``                   | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -52,7 +55,7 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``asof``                    | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``astype``                  | Y                               |                                                    |
+| ``astype``                  | Y                               | **Omnisci**:``P``, ``int`` and ``float`` supported |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``at``                      | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -91,7 +94,8 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 |                             |                                 | available only. For other methods defaults to      |
 |                             |                                 | pandas.                                            |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``count``                   | Y                               |                                                    |
+| ``count``                   | Y                               | **Omnisci**:``P``, only default params supported,  |
+|                             |                                 | otherwise ``D``                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``cov``                     | Y                               | Covariance floating point precision may slightly   |
 |                             |                                 | differ from pandas.                                |
@@ -118,25 +122,27 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``dot``                     | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``drop``                    | Y                               |                                                    |
+| ``drop``                    | Y                               | **Omnisci**:``P``, ``D`` for row drop?             |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``drop_duplicates``         | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``droplevel``               | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``dropna``                  | Y                               |                                                    |
+| ``dropna``                  | Y                               | **Omnisci**:``P``, same as ``drop``,               |
+|                             |                                 | also ``D`` for ``thresh`` and ``axis`` parameters  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``dt``                      | Y                               |                                                    |
+| ``dt``                      | Y                               | **Omnisci**:``P``, only ``year``, ``month``,       |
+|                             |                                 | ``day`` and ``hour`` supported, otherwise ``D``    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``dtype``                   | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``dtypes``                  | Y                               |                                                    |
+| ``dtypes``                  | Y                               | **Omnisci**:``Y`` ?                                |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``duplicated``              | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``empty``                   | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``eq``                      | Y                               |                                                    |
+| ``eq``                      | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``equals``                  | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -150,7 +156,7 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``ffill``                   | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``fillna``                  | Y                               |                                                    |
+| ``fillna``                  | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``filter``                  | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -160,13 +166,13 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``flags``                   | D                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``floordiv``                | Y                               |                                                    |
+| ``floordiv``                | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``from_array``              | D                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``ftype``                   | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``ge``                      | Y                               |                                                    |
+| ``ge``                      | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``get``                     | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -178,9 +184,10 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``get_values``              | D                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``groupby``                 | D                               |                                                    |
+| ``groupby``                 | D                               | **Omnisci**:``P``, ``count``, ``sum``, ``size``    |
+|                             |                                 | supported, otherwise ``D``                         |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``gt``                      | Y                               |                                                    |
+| ``gt``                      | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``hasnans``                 | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -194,7 +201,7 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``idxmin``                  | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``iloc``                    | Y                               |                                                    |
+| ``iloc``                    | Y                               | **Omnisci**:``P``?                                 |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``imag``                    | D                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -236,11 +243,11 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``last_valid_index``        | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``le``                      | Y                               |                                                    |
+| ``le``                      | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``loc``                     | Y                               |                                                    |
+| ``loc``                     | Y                               | **Omnisci**:``P``?                                 |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``lt``                      | Y                               |                                                    |
+| ``lt``                      | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``mad``                     | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -248,23 +255,27 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``mask``                    | D                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``max``                     | Y                               |                                                    |
+| ``max``                     | Y                               | **Omnisci**:``P``, only default params supported,  |
+|                             |                                 | otherwise ``D``                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``mean``                    | P                               | Modin defaults to pandas if given the ``level``    |
 |                             |                                 | param.                                             |
+|                             |                                 | **Omnisci**:``P``, ``D`` for ``level``, ``axis``,  |
+|                             |                                 | 'skipna' and 'numeric_only' params                 |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``median``                  | P                               | Modin defaults to pandas if given the ``level``    |
 |                             |                                 | param.                                             |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``memory_usage``            | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``min``                     | Y                               |                                                    |
+| ``min``                     | Y                               | **Omnisci**:``P``, only default params supported,  |
+|                             |                                 | otherwise ``D``                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``mod``                     | Y                               |                                                    |
+| ``mod``                     | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``mode``                    | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``mul``                     | Y                               |                                                    |
+| ``mul``                     | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``multiply``                | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -274,7 +285,7 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``ndim``                    | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``ne``                      | Y                               |                                                    |
+| ``ne``                      | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``nlargest``                | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -286,7 +297,8 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``nsmallest``               | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``nunique``                 | Y                               |                                                    |
+| ``nunique``                 | Y                               | **Omnisci**:``P``, no support for axis!=0 and      |
+|                             |                                 | dropna=False                                       |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``pct_change``              | D                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -336,7 +348,7 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``resample``                | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``reset_index``             | Y                               |                                                    |
+| ``reset_index``             | Y                               | **Omnisci**:``P``, ``D`` for ``level`` parameter   |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``rfloordiv``               | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -365,7 +377,7 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``set_value``               | D                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``shape``                   | Y                               |                                                    |
+| ``shape``                   | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``shift``                   | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -378,7 +390,7 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``sort_index``              | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``sort_values``             | Y                               |                                                    |
+| ``sort_values``             | D                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``sparse``                  | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -391,11 +403,12 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``strides``                 | D                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``sub``                     | Y                               |                                                    |
+| ``sub``                     | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``subtract``                | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``sum``                     | Y                               |                                                    |
+| ``sum``                     | Y                               | **Omnisci**:``P``, only default params supported,  |
+|                             |                                 | otherwise ``D``                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``swapaxes``                | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -443,7 +456,7 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``transpose``               | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
-| ``truediv``                 | Y                               |                                                    |
+| ``truediv``                 | Y                               | **Omnisci**:``Y``                                  |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``truncate``                | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
@@ -463,6 +476,7 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``value_counts``            | Y                               | The indices order of resulting object may differ   |
 |                             |                                 | from pandas.                                       |
+|                             |                                 | **Omnisci**:``Y``?                                 |
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``values``                  | Y                               |                                                    |
 +-----------------------------+---------------------------------+----------------------------------------------------+
diff --git a/docs/supported_apis/utilities_supported.rst b/docs/supported_apis/utilities_supported.rst
index 418d032447e..1b0ae930205 100644
--- a/docs/supported_apis/utilities_supported.rst
+++ b/docs/supported_apis/utilities_supported.rst
@@ -11,11 +11,14 @@ The second column is a flag for whether or not there is an implementation in Mod
 the method in the left column. ``Y`` stands for yes, ``N`` stands for no, ``P`` stands
 for partial (meaning some parameters may not be supported yet), and ``D`` stands for
 default to pandas.
+**Currently second column reflects implementation status for Ray and Dask engines. By default support of a method
+in the Omnisci engine could be treated as ``D`` unless ``Notes`` column contains additional information. imilarly,
+by default ``Notes`` contains information about ``Ray`` and ``Dask`` engines unless ``Omnisci`` explicitly mentioned.**
 
 +---------------------------+---------------------------------+----------------------------------------------------+
 | Utility method            | Modin Implementation? (Y/N/P/D) | Notes for Current implementation                   |
 +---------------------------+---------------------------------+----------------------------------------------------+
-| `pd.concat`_              | Y                               |                                                    |
+| `pd.concat`_              | Y                               |  **Omnisci**:``P``?                                |
 +---------------------------+---------------------------------+----------------------------------------------------+
 | `pd.eval`_                | Y                               |                                                    |
 +---------------------------+---------------------------------+----------------------------------------------------+


Code review comments:
diff_hunk: @@ -270,6 +290,7 @@ default to pandas.
 | ``pop``                    | `pop`_                    | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``pow``                    | `pow`_                    | Y                      | See ``add``                                        |
+|                            |                           |                        | **Omnisci**:``N``                                  |
path: docs/supported_apis/dataframe_supported.rst
text: @user1:
should it be "D"? `.pow` works for me with the warning:
```python
>>> df.pow(2)
UserWarning: <function DataFrame.pow> defaulting to pandas implementation.
   a   b
0  1   9
1  4  16
2  4  25
3  1  36
```

@author:
Is this for Omnisci engine?

@user1:
Yes it is. Actually all of the "N"-marked binary operations work with Omnisci engine (defaulting to pandas though) in both scenarios: fn(df, scalar) and fn(df, df). Check the following repro:
```python
import modin.config as cfg
cfg.StorageFormat.put("Omnisci")

import modin.pandas as pd

df1 = pd.DataFrame({"a": [1, 2, 3]})
df2 = pd.DataFrame({"a": [10, 20, 30]})

for op in ("pow", "rfloordiv", "rmod", "rpow", "rsub", "rtruediv", "subtract"):
    print(f"======= {op} ======")
    print(getattr(df1, op)(2))
    print(getattr(df1, op)(df2))
```
The repro passes for me and I see no code paths that tells that these operations are not supported at all. How did you find the operations unsupported?

@author:
I was actually looking at ``N`` as well, how it appeared? This is sort of typo from my side, I think :)

diff_hunk: @@ -279,11 +300,11 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``query``                  | `query`_                  | P                      | Local variables not yet supported                  |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``radd``                   | `radd`_                   | Y                      | See ``add``                                        |
+| ``radd``                   | `radd`_                   | Y                      | See ``add``; **Omnisci**:``N``                     |
path: docs/supported_apis/dataframe_supported.rst
text: @user1:
As long `add` is supported `radd` is supported as well, so it should be "Y"
https://github.com/modin-project/modin/blob/5440f08c1dca02f12ea4a4479e6d3ea91cef5a66/modin/pandas/base.py#L1871

@author:
Fixed

diff_hunk: @@ -279,11 +300,11 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``query``                  | `query`_                  | P                      | Local variables not yet supported                  |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``radd``                   | `radd`_                   | Y                      | See ``add``                                        |
+| ``radd``                   | `radd`_                   | Y                      | See ``add``; **Omnisci**:``N``                     |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``rank``                   | `rank`_                   | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``rdiv``                   | `rdiv`_                   | Y                      | See ``add``                                        |
+| ``rdiv``                   | `rdiv`_                   | Y                      | See ``add``; **Omnisci**:``N``                     |
path: docs/supported_apis/dataframe_supported.rst
text: @user1:
"D"?
```python
>>> df.rdiv(2)
UserWarning: <function DataFrame.rtruediv> defaulting to pandas implementation.
     a         b
0  2.0  0.666667
1  1.0  0.500000
2  1.0  0.400000
3  2.0  0.333333
```

@author:
Updated

diff_hunk: @@ -299,23 +320,23 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``resample``               | `resample`_               | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``reset_index``            | `reset_index`_            | Y                      |                                                    |
+| ``reset_index``            | `reset_index`_            | Y                      | **Omnisci**:``P``, ``D`` for ``level`` parameter   |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``rfloordiv``              | `rfloordiv`_              | Y                      | See ``add``                                        |
+| ``rfloordiv``              | `rfloordiv`_              | Y                      | See ``add``; **Omnisci**:``N``                     |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``rmod``                   | `rmod`_                   | Y                      | See ``add``                                        |
+| ``rmod``                   | `rmod`_                   | Y                      | See ``add``; **Omnisci**:``N``                     |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``rmul``                   | `rmul`_                   | Y                      | See ``add``                                        |
+| ``rmul``                   | `rmul`_                   | Y                      | See ``add``; **Omnisci**:``N``                     |
path: docs/supported_apis/dataframe_supported.rst
text: @user1:
`rmul` should be supported as well as `mul`, at least I get no warnings for it:
```python
>>> df.rmul(2)
   a   b
0  2   6
1  4   8
2  6  10
3  8  12
```

List of supported binary operations by Omnisci [[1]](https://github.com/modin-project/modin/blob/5440f08c1dca02f12ea4a4479e6d3ea91cef5a66/modin/experimental/core/storage_formats/omnisci/query_compiler.py#L621-L661)

@author:
Fixed

diff_hunk: @@ -463,6 +476,7 @@ the related section on :doc:`Defaulting to pandas </supported_apis/index>`.
 +-----------------------------+---------------------------------+----------------------------------------------------+
 | ``value_counts``            | Y                               | The indices order of resulting object may differ   |
 |                             |                                 | from pandas.                                       |
+|                             |                                 | **Omnisci**:``Y``?                                 |
path: docs/supported_apis/series_supported.rst
text: @user1:
`value_counts` should be fully supported for except of `dropna=True` parameter

@author:
Right, I see this in tests. Fixed

diff_hunk: @@ -103,15 +110,16 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``dot``                    | `dot`_                    | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``drop``                   | `drop`_                   | Y                      |                                                    |
+| ``drop``                   | `drop`_                   | Y                      | **Omnisci**:``P``, ``D`` for row drop              |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``droplevel``              | `droplevel`_              | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``drop_duplicates``        | `drop_duplicates`_        | D                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``dropna``                 | `dropna`_                 | Y                      |                                                    |
+| ``dropna``                 | `dropna`_                 | Y                      | **Omnisci**:``P``, same as ``drop``,               |
+|                            |                           |                        | also ``D`` for ``thresh`` and ``axis`` parameters  |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``dtypes``                 | `dtypes`_                 | Y                      |                                                    |
+| ``dtypes``                 | `dtypes`_                 | Y                      | **Omnisci**:``Y`` ?                                |
path: docs/supported_apis/dataframe_supported.rst
text: @user1:
`dtypes` is fully supported, no need for a question tag

@author:
Updated

diff_hunk: @@ -47,7 +53,7 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``assign``                 | `assign`_                 | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``astype``                 | `astype`_                 | Y                      |                                                    |
+| ``astype``                 | `astype`_                 | Y                      | **Omnisci**:``P``, ``int`` and ``float`` supported |
path: docs/supported_apis/dataframe_supported.rst
text: @user1:
I would mention that the only cast that is supported is `int <-> float`, as the note may be treated that `.astype(int)` and `.astype(float)` are certainly supported, however it's not true. Allowed type casts are ruled by [this table in omnisci's docs](https://docs.omnisci.com/v5.2.1/5_dml.html#type-cast-support) that is more convervative than pandas. For example it doesn't allow parsing strings into some other dtypes when pandas do allow:
```python
>>> pandas.Series(["1", "2", "3"]).astype(float)
0    1.0
1    2.0
2    3.0
dtype: float64
```

@author:
Thanks, updated

diff_hunk: @@ -35,7 +41,7 @@ default to pandas.
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
 | ``any``                    | `any`_                    | Y                      |                                                    |
 +----------------------------+---------------------------+------------------------+----------------------------------------------------+
-| ``append``                 | `append`_                 | Y                      |                                                    |
+| ``append``                 | `append`_                 | Y                      | **Omnisci**:``Y``?                                 |
path: docs/supported_apis/dataframe_supported.rst
text: @user1:
It should be supported why a question tag? I get plenty of warning when running `append` but not a default-to-pandas one 😄 (except for transpose)
```python
>>> import modin.pandas as pd
>>> df = pd.DataFrame({"a": [1, 2, 2, 1], "b": [3, 4, 5, 6]})
>>> df.append(pd.Series([10, 20], index=["a", "b"]), ignore_index=True)
UserWarning: Distributing <class 'list'> object. This may take some time.
FutureWarning: pandas.Int64Index is deprecated and will be removed from pandas in a future version. Use pandas.Index with the appropriate dtype instead.
UserWarning: Due to https://github.com/pandas-dev/pandas/issues/35092, Pandas ignores sort=False; Modin correctly does not sort.
UserWarning: <function DataFrame.transpose> defaulting to pandas implementation.
Please refer to https://modin.readthedocs.io/en/stable/supported_apis/defaulting_to_pandas.html for explanation.
FutureWarning: pandas.Int64Index is deprecated and will be removed from pandas in a future version. Use pandas.Index with the appropriate dtype instead.
    a   b
0   1   3
1   2   4
2   2   5
3   1   6
4  10  20
```

@author:
There were doubts whether all params supported


@author:
eg there is a ``sort`` param 

@user1:
`sort` and `ignore_index` parameters are actually ignored by [`OmnisciOnNativeDataframe.concat`](https://github.com/modin-project/modin/blob/95d71b2bde0ceb40cb1b64fa762b3009a94168dd/modin/experimental/core/execution/native/implementations/omnisci_on_native/dataframe/dataframe.py#L1125) in several cases