[jira] [Commented] (ARROW-7102) [Python] Make filesystem wrappers compatible with fsspec

["Matthew Corley (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-7102?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17077740#comment-17077740 ] 

Matthew Corley commented on ARROW-7102:
---------------------------------------

{{[~apitrou] - The Python wrapping for the C++ S3 filesystem implementation ( pyarrow.fs.S3FileSystem) seems to be missing in the latest (016.0) macOS wheel.  Is this expected or should I open a separate issue?}}

{{Steps to repro (in a fresh venv):}}
{{Install:}}
{code:java}
❯ pip install --no-cache-dir --index-url https://pypi.python.org/pypi pyarrow
Looking in indexes: https://pypi.python.org/pypi
Collecting pyarrow
  Downloading pyarrow-0.16.0-cp36-cp36m-macosx_10_9_intel.whl (40.6 MB)
     |████████████████████████████████| 40.6 MB 17.2 MB/s
Collecting numpy>=1.14
  Downloading numpy-1.18.2-cp36-cp36m-macosx_10_9_x86_64.whl (15.2 MB)
     |████████████████████████████████| 15.2 MB 2.7 MB/s
Collecting six>=1.0.0
  Downloading six-1.14.0-py2.py3-none-any.whl (10 kB)
Installing collected packages: numpy, six, pyarrow
Successfully installed numpy-1.18.2 pyarrow-0.16.0 six-1.14.0{code}
Import:
{code:java}
Python 3.6.9 (default, Oct  1 2019, 14:07:47)
[GCC 4.2.1 Compatible Apple LLVM 10.0.1 (clang-1001.0.46.4)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from pyarrow import fs
>>> dir(fs)
['FileSelector', 'FileStats', 'FileSystem', 'FileType', 'HadoopFileSystem', 'HdfsOptions', 'LocalFileSystem', 'LocalFileSystemOptions', 'SubTreeFileSystem', '_MockFileSystem', '__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__spec__', 'absolute_import']
{code}
 

 

 

> [Python] Make filesystem wrappers compatible with fsspec
> --------------------------------------------------------
>
>                 Key: ARROW-7102
>                 URL: https://issues.apache.org/jira/browse/ARROW-7102
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Python
>            Reporter: Tom Augspurger
>            Priority: Major
>              Labels: FileSystem
>
> [fsspec|https://filesystem-spec.readthedocs.io/en/latest] defines a common API for a variety filesystem implementations. I'm proposing a FSSpecWrapper, similar to S3FSWrapper, that works with any fsspec implementation.
>  
> Right now, pyarrow has a pyarrow.filesystems.S3FSWrapper, which is specific to s3fs. [https://github.com/apache/arrow/blob/21ad7ac1162eab188a1e15923fb1de5b795337ec/python/pyarrow/filesystem.py#L320]. This implementation could be removed entirely once an FSSPecWrapper is done, or kept as an alias if it's part of the public API.
>  
> This is realted to ARROW-3717, which requested a GCSFSWrapper for working with google cloud storage.



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