[GitHub] [arrow] lidavidm commented on pull request #10348: ARROW-12810: [Python] Stop AWS SDK from looking for metadata service

[GitBox <gi...@apache.org>]

lidavidm commented on pull request #10348:
URL: https://github.com/apache/arrow/pull/10348#issuecomment-842532124


   Before:
   ```
   ================================================== slowest 10 durations ===================================================
   159.74s call     pyarrow/tests/test_fs.py::test_s3_proxy_options
   15.99s call     pyarrow/tests/test_dataset.py::test_open_dataset_from_s3_with_filesystem_uri
   15.22s call     pyarrow/tests/test_fs.py::test_s3_real_aws_region_selection
   3.19s call     pyarrow/tests/test_fs.py::test_s3_real_aws
   3.12s call     pyarrow/tests/test_dataset.py::test_write_dataset_s3
   2.03s setup    pyarrow/tests/test_fs.py::test_open_input_stream[S3FileSystem-gzip-256-compress]
   2.02s call     pyarrow/tests/test_fs.py::test_filesystem_is_functional_after_pickling[S3FileSystem]
   2.02s setup    pyarrow/tests/test_dataset.py::test_open_dataset_from_uri_s3
   2.01s setup    pyarrow/tests/test_dataset.py::test_open_dataset_from_uri_s3_fsspec
   2.01s setup    pyarrow/tests/test_dataset.py::test_write_dataset_s3
   ```
   
   After:
   ```
   ================================================== slowest 10 durations ===================================================
   0.69s call     pyarrow/tests/test_fs.py::test_s3_real_aws_region_selection
   0.63s call     pyarrow/tests/test_fs.py::test_s3_options
   0.31s call     pyarrow/tests/parquet/test_dataset.py::test_read_multiple_files[True]
   0.27s setup    pyarrow/tests/test_dataset.py::test_make_fragment
   0.25s call     pyarrow/tests/test_dataset.py::test_open_dataset_from_uri_s3_fsspec
   0.22s setup    pyarrow/tests/test_dataset.py::test_open_dataset_from_uri_s3
   0.21s call     pyarrow/tests/parquet/test_dataset.py::test_read_partitioned_directory_s3fs[True]
   0.19s call     pyarrow/tests/test_dataset.py::test_union_dataset_from_other_datasets
   0.18s call     pyarrow/tests/parquet/test_dataset.py::test_read_partitioned_directory_s3fs[False]
   0.16s call     pyarrow/tests/parquet/test_dataset.py::test_read_multiple_files[False]
   ```


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