Title: Update docs of S3 filesystem with async aiobotocore
State: closed

[s3fs has migrated to all async calls](https://github.com/fsspec/s3fs/commit/0de2c6fb3d87c08ea694de96dca0d0834034f8bf). 
Updating documentation to use `AioSession` while using s3fs for download manager as well as working with datasets

Comments:
_The documentation is not available anymore as the PR was closed or merged._

<details>
<summary>Show benchmarks</summary>

PyArrow==6.0.0

<details>
<summary>Show updated benchmarks!</summary>

### Benchmark: benchmark_array_xd.json

| metric | read_batch_formatted_as_numpy after write_array2d | read_batch_formatted_as_numpy after write_flattened_sequence | read_batch_formatted_as_numpy after write_nested_sequence | read_batch_unformated after write_array2d | read_batch_unformated after write_flattened_sequence | read_batch_unformated after write_nested_sequence | read_col_formatted_as_numpy after write_array2d | read_col_formatted_as_numpy after write_flattened_sequence | read_col_formatted_as_numpy after write_nested_sequence | read_col_unformated after write_array2d | read_col_unformated after write_flattened_sequence | read_col_unformated after write_nested_sequence | read_formatted_as_numpy after write_array2d | read_formatted_as_numpy after write_flattened_sequence | read_formatted_as_numpy after write_nested_sequence | read_unformated after write_array2d | read_unformated after write_flattened_sequence | read_unformated after write_nested_sequence | write_array2d | write_flattened_sequence | write_nested_sequence |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.008587 / 0.011353 (-0.002766) | 0.004613 / 0.011008 (-0.006395) | 0.100446 / 0.038508 (0.061938) | 0.029606 / 0.023109 (0.006497) | 0.302102 / 0.275898 (0.026204) | 0.357364 / 0.323480 (0.033884) | 0.007031 / 0.007986 (-0.000954) | 0.003593 / 0.004328 (-0.000735) | 0.078110 / 0.004250 (0.073860) | 0.035495 / 0.037052 (-0.001557) | 0.312522 / 0.258489 (0.054033) | 0.349336 / 0.293841 (0.055495) | 0.033719 / 0.128546 (-0.094827) | 0.011449 / 0.075646 (-0.064197) | 0.321760 / 0.419271 (-0.097512) | 0.043697 / 0.043533 (0.000165) | 0.304476 / 0.255139 (0.049337) | 0.333126 / 0.283200 (0.049926) | 0.092756 / 0.141683 (-0.048927) | 1.506734 / 1.452155 (0.054579) | 1.547381 / 1.492716 (0.054664) |

### Benchmark: benchmark_getitem\_100B.json

| metric | get_batch_of\_1024\_random_rows | get_batch_of\_1024\_rows | get_first_row | get_last_row |
|--------|---|---|---|---|
| new / old (diff) | 0.178177 / 0.018006 (0.160171) | 0.427814 / 0.000490 (0.427324) | 0.002505 / 0.000200 (0.002305) | 0.000074 / 0.000054 (0.000020) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.023039 / 0.037411 (-0.014372) | 0.097113 / 0.014526 (0.082587) | 0.105014 / 0.176557 (-0.071543) | 0.141185 / 0.737135 (-0.595950) | 0.108843 / 0.296338 (-0.187495) |

### Benchmark: benchmark_iterating.json

| metric | read 5000 | read 50000 | read_batch 50000 10 | read_batch 50000 100 | read_batch 50000 1000 | read_formatted numpy 5000 | read_formatted pandas 5000 | read_formatted tensorflow 5000 | read_formatted torch 5000 | read_formatted_batch numpy 5000 10 | read_formatted_batch numpy 5000 1000 | shuffled read 5000 | shuffled read 50000 | shuffled read_batch 50000 10 | shuffled read_batch 50000 100 | shuffled read_batch 50000 1000 | shuffled read_formatted numpy 5000 | shuffled read_formatted_batch numpy 5000 10 | shuffled read_formatted_batch numpy 5000 1000 |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.424148 / 0.215209 (0.208939) | 4.247599 / 2.077655 (2.169944) | 2.130720 / 1.504120 (0.626600) | 1.916349 / 1.541195 (0.375154) | 1.831515 / 1.468490 (0.363025) | 0.688301 / 4.584777 (-3.896476) | 3.381749 / 3.745712 (-0.363963) | 2.900045 / 5.269862 (-2.369817) | 1.576248 / 4.565676 (-2.989428) | 0.082354 / 0.424275 (-0.341921) | 0.012200 / 0.007607 (0.004593) | 0.525753 / 0.226044 (0.299709) | 5.277672 / 2.268929 (3.008743) | 2.603870 / 55.444624 (-52.840754) | 2.296203 / 6.876477 (-4.580273) | 2.308014 / 2.142072 (0.165942) | 0.809056 / 4.805227 (-3.996171) | 0.148122 / 6.500664 (-6.352542) | 0.066097 / 0.075469 (-0.009372) |

### Benchmark: benchmark_map_filter.json

| metric | filter | map fast-tokenizer batched | map identity | map identity batched | map no-op batched | map no-op batched numpy | map no-op batched pandas | map no-op batched pytorch | map no-op batched tensorflow |
|--------|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 1.214059 / 1.841788 (-0.627728) | 13.671332 / 8.074308 (5.597024) | 13.694554 / 10.191392 (3.503162) | 0.151454 / 0.680424 (-0.528970) | 0.028514 / 0.534201 (-0.505687) | 0.391480 / 0.579283 (-0.187804) | 0.404499 / 0.434364 (-0.029865) | 0.458111 / 0.540337 (-0.082226) | 0.539454 / 1.386936 (-0.847482) |

</details>
PyArrow==latest

<details>
<summary>Show updated benchmarks!</summary>

### Benchmark: benchmark_array_xd.json

| metric | read_batch_formatted_as_numpy after write_array2d | read_batch_formatted_as_numpy after write_flattened_sequence | read_batch_formatted_as_numpy after write_nested_sequence | read_batch_unformated after write_array2d | read_batch_unformated after write_flattened_sequence | read_batch_unformated after write_nested_sequence | read_col_formatted_as_numpy after write_array2d | read_col_formatted_as_numpy after write_flattened_sequence | read_col_formatted_as_numpy after write_nested_sequence | read_col_unformated after write_array2d | read_col_unformated after write_flattened_sequence | read_col_unformated after write_nested_sequence | read_formatted_as_numpy after write_array2d | read_formatted_as_numpy after write_flattened_sequence | read_formatted_as_numpy after write_nested_sequence | read_unformated after write_array2d | read_unformated after write_flattened_sequence | read_unformated after write_nested_sequence | write_array2d | write_flattened_sequence | write_nested_sequence |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.006795 / 0.011353 (-0.004558) | 0.004463 / 0.011008 (-0.006545) | 0.099542 / 0.038508 (0.061034) | 0.027588 / 0.023109 (0.004479) | 0.423023 / 0.275898 (0.147125) | 0.458459 / 0.323480 (0.134979) | 0.004981 / 0.007986 (-0.003005) | 0.003321 / 0.004328 (-0.001008) | 0.075727 / 0.004250 (0.071477) | 0.040541 / 0.037052 (0.003489) | 0.423724 / 0.258489 (0.165235) | 0.468334 / 0.293841 (0.174493) | 0.031732 / 0.128546 (-0.096814) | 0.011478 / 0.075646 (-0.064168) | 0.319807 / 0.419271 (-0.099465) | 0.041215 / 0.043533 (-0.002318) | 0.423060 / 0.255139 (0.167921) | 0.446157 / 0.283200 (0.162957) | 0.088884 / 0.141683 (-0.052799) | 1.553404 / 1.452155 (0.101250) | 1.607797 / 1.492716 (0.115080) |

### Benchmark: benchmark_getitem\_100B.json

| metric | get_batch_of\_1024\_random_rows | get_batch_of\_1024\_rows | get_first_row | get_last_row |
|--------|---|---|---|---|
| new / old (diff) | 0.208314 / 0.018006 (0.190307) | 0.411627 / 0.000490 (0.411137) | 0.002416 / 0.000200 (0.002216) | 0.000078 / 0.000054 (0.000024) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.024641 / 0.037411 (-0.012770) | 0.101047 / 0.014526 (0.086521) | 0.108410 / 0.176557 (-0.068147) | 0.142860 / 0.737135 (-0.594276) | 0.112486 / 0.296338 (-0.183852) |

### Benchmark: benchmark_iterating.json

| metric | read 5000 | read 50000 | read_batch 50000 10 | read_batch 50000 100 | read_batch 50000 1000 | read_formatted numpy 5000 | read_formatted pandas 5000 | read_formatted tensorflow 5000 | read_formatted torch 5000 | read_formatted_batch numpy 5000 10 | read_formatted_batch numpy 5000 1000 | shuffled read 5000 | shuffled read 50000 | shuffled read_batch 50000 10 | shuffled read_batch 50000 100 | shuffled read_batch 50000 1000 | shuffled read_formatted numpy 5000 | shuffled read_formatted_batch numpy 5000 10 | shuffled read_formatted_batch numpy 5000 1000 |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.485520 / 0.215209 (0.270311) | 4.864009 / 2.077655 (2.786355) | 2.541865 / 1.504120 (1.037745) | 2.339569 / 1.541195 (0.798374) | 2.378258 / 1.468490 (0.909768) | 0.698000 / 4.584777 (-3.886777) | 3.343137 / 3.745712 (-0.402575) | 1.842264 / 5.269862 (-3.427597) | 1.154707 / 4.565676 (-3.410969) | 0.082826 / 0.424275 (-0.341449) | 0.012379 / 0.007607 (0.004772) | 0.583335 / 0.226044 (0.357291) | 5.885934 / 2.268929 (3.617006) | 2.997769 / 55.444624 (-52.446856) | 2.653681 / 6.876477 (-4.222796) | 2.761656 / 2.142072 (0.619583) | 0.799883 / 4.805227 (-4.005344) | 0.151398 / 6.500664 (-6.349266) | 0.067445 / 0.075469 (-0.008024) |

### Benchmark: benchmark_map_filter.json

| metric | filter | map fast-tokenizer batched | map identity | map identity batched | map no-op batched | map no-op batched numpy | map no-op batched pandas | map no-op batched pytorch | map no-op batched tensorflow |
|--------|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 1.292009 / 1.841788 (-0.549779) | 13.976180 / 8.074308 (5.901872) | 14.219469 / 10.191392 (4.028077) | 0.127810 / 0.680424 (-0.552614) | 0.016919 / 0.534201 (-0.517282) | 0.376401 / 0.579283 (-0.202882) | 0.388563 / 0.434364 (-0.045801) | 0.444904 / 0.540337 (-0.095433) | 0.532290 / 1.386936 (-0.854646) |

</details>
</details>

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