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https://issues.apache.org/jira/browse/ARROW-10923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Darren Weber updated ARROW-10923:
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Summary: Failure to read parquet from s3 after uploading file to s3-object
(was: Failure to read parquet from s3 after copy of s3-object to new s3-key)
> Failure to read parquet from s3 after uploading file to s3-object
> -----------------------------------------------------------------
>
> Key: ARROW-10923
> URL: https://issues.apache.org/jira/browse/ARROW-10923
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Python
> Reporter: Darren Weber
> Priority: Major
>
> After a parquet file was copied to an s3-bucket and s3-key, pyarrow does not
> read it from s3. Desired behavior is that an s3-object for parquet should be
> self-contained, it should not depend on or track any substantial metadata
> about the storage engine or file system location it was saved to in such a
> way that it prevents relocating the object. To try to replicate the problem,
> save any parquet file on a linux file system (ext4) and then use the aws-cli
> to copy that file to any s3-object and then try to use geopandas.read_parquet
> to load that s3-object.
> ```
> File
> "/opt/conda/envs/project/lib/python3.7/site-packages/geopandas/io/arrow.py",
> line 404, in _read_parquet
> table = parquet.read_table(path, columns=columns, **kwargs)
> File
> "/opt/conda/envs/project/lib/python3.7/site-packages/pyarrow/parquet.py",
> line 1573, in read_table
> ignore_prefixes=ignore_prefixes,
> File
> "/opt/conda/envs/project/lib/python3.7/site-packages/pyarrow/parquet.py",
> line 1434, in __init__
> ignore_prefixes=ignore_prefixes)
> File
> "/opt/conda/envs/project/lib/python3.7/site-packages/pyarrow/dataset.py",
> line 667, in dataset
> return _filesystem_dataset(source, **kwargs)
> File
> "/opt/conda/envs/project/lib/python3.7/site-packages/pyarrow/dataset.py",
> line 424, in _filesystem_dataset
> fs, paths_or_selector = _ensure_single_source(source, filesystem)
> File
> "/opt/conda/envs/project/lib/python3.7/site-packages/pyarrow/dataset.py",
> line 391, in _ensure_single_source
> file_info = filesystem.get_file_info([path])[0]
> File "pyarrow/_fs.pyx", line 429, in pyarrow._fs.FileSystem.get_file_info
> File "pyarrow/error.pxi", line 122, in
> pyarrow.lib.pyarrow_internal_check_status
> File "pyarrow/error.pxi", line 99, in pyarrow.lib.check_status
> ```
> ```
> $ poetry show pyarrow
> name : pyarrow
> version : 1.0.1
> description : Python library for Apache Arrow
> dependencies
> - numpy >=1.14
> $ poetry show geopandas
> name : geopandas
> version : 0.8.1
> description : Geographic pandas extensions
> dependencies
> - fiona *
> - pandas >=0.23.0
> - pyproj >=2.2.0
> - shapely *
> $ poetry show s3fs
> name : s3fs
> version : 0.4.2
> description : Convenient Filesystem interface over S3
> dependencies
> - botocore >=1.12.91
> - fsspec >=0.6.0
> $ poetry show fsspec
> name : fsspec
> version : 0.8.4
> description : File-system specification
> ```
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