Issue: Fix CI 404 errors
State: closed
Author: albertvillanova

Currently our CI usually raises 404 errors when trying to delete temporary repositories. See, e.g.: https://github.com/huggingface/datasets/actions/runs/6314980985/job/17146507884
```
FAILED tests/test_upstream_hub.py::TestPushToHub::test_push_dataset_dict_to_hub_multiple_files_with_max_shard_size - huggingface_hub.utils._errors.RepositoryNotFoundError: 404 Client Error. (Request ID: Root=1-6512fb99-4a52c561752ece3d77eb6d57;2b61cae4-613d-4a73-bbb1-2faf9e32b02d)
Repository Not Found for url: https://hub-ci.huggingface.co/api/repos/delete.
Please make sure you specified the correct `repo_id` and `repo_type`.
If you are trying to access a private or gated repo, make sure you are authenticated.

FAILED tests/test_upstream_hub.py::TestPushToHub::test_push_dataset_to_hub_custom_features_audio - huggingface_hub.utils._errors.RepositoryNotFoundError: 404 Client Error. (Request ID: Root=1-6512fbb2-0333dd666d42f0e173c2bb68;dfdc4271-b49b-4008-8c49-f05cf7c1d53d)
Repository Not Found for url: https://hub-ci.huggingface.co/api/repos/delete.
Please make sure you specified the correct `repo_id` and `repo_type`.
If you are trying to access a private or gated repo, make sure you are authenticated.

FAILED tests/test_upstream_hub.py::TestPushToHub::test_push_dataset_dict_to_hub_custom_splits - huggingface_hub.utils._errors.RepositoryNotFoundError: 404 Client Error. (Request ID: Root=1-6512fbca-167690694f39770a5b3a444e;baeaa905-0a57-4585-ac97-9aaae12dd47d)
Repository Not Found for url: https://hub-ci.huggingface.co/api/repos/delete.
Please make sure you specified the correct `repo_id` and `repo_type`.
If you are trying to access a private or gated repo, make sure you are authenticated.
```

I think this can be caused by collisions in temporary repository IDs because we create them in multiprocessing:
```python
with temporary_repo(f"{CI_HUB_USER}/test-{int(time.time() * 10e3)}") as ds_name:
```
This can also be caused when there is another issue that does not allow the creation of the repository, thus making it impossible to delete it.

This PR tries to fix this issue by increasing the precision of the number on the repository ID: `10e6` instead of `10e3`.
Additionally, this PR catches RepositoryNotFoundError.


Comments:
<details>
<summary>Show benchmarks</summary>

PyArrow==8.0.0

<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) | 0.008220 / 0.011353 (-0.003133) | 0.005560 / 0.011008 (-0.005448) | 0.100147 / 0.038508 (0.061639) | 0.070106 / 0.023109 (0.046996) | 0.411906 / 0.275898 (0.136008) | 0.432825 / 0.323480 (0.109345) | 0.004795 / 0.007986 (-0.003190) | 0.004094 / 0.004328 (-0.000235) | 0.075719 / 0.004250 (0.071468) | 0.067426 / 0.037052 (0.030374) | 0.428531 / 0.258489 (0.170042) | 0.437114 / 0.293841 (0.143273) | 0.045603 / 0.128546 (-0.082943) | 0.013333 / 0.075646 (-0.062313) | 0.353137 / 0.419271 (-0.066134) | 0.067902 / 0.043533 (0.024369) | 0.396633 / 0.255139 (0.141494) | 0.399185 / 0.283200 (0.115985) | 0.036377 / 0.141683 (-0.105306) | 1.624249 / 1.452155 (0.172094) | 1.792575 / 1.492716 (0.299859) |

### 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) | 0.315847 / 0.018006 (0.297840) | 0.595009 / 0.000490 (0.594519) | 0.018876 / 0.000200 (0.018676) | 0.000613 / 0.000054 (0.000558) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.029886 / 0.037411 (-0.007526) | 0.085765 / 0.014526 (0.071239) | 0.108680 / 0.176557 (-0.067877) | 0.174588 / 0.737135 (-0.562548) | 0.104494 / 0.296338 (-0.191844) |

### 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) | 0.594429 / 0.215209 (0.379220) | 5.912352 / 2.077655 (3.834698) | 2.408501 / 1.504120 (0.904381) | 2.050914 / 1.541195 (0.509720) | 2.199349 / 1.468490 (0.730859) | 0.813797 / 4.584777 (-3.770980) | 5.169577 / 3.745712 (1.423864) | 4.653951 / 5.269862 (-0.615911) | 2.805423 / 4.565676 (-1.760253) | 0.092278 / 0.424275 (-0.331997) | 0.007394 / 0.007607 (-0.000213) | 0.684029 / 0.226044 (0.457985) | 6.964260 / 2.268929 (4.695331) | 3.108408 / 55.444624 (-52.336217) | 2.470907 / 6.876477 (-4.405569) | 2.460153 / 2.142072 (0.318081) | 0.986445 / 4.805227 (-3.818782) | 0.213069 / 6.500664 (-6.287596) | 0.074061 / 0.075469 (-0.001408) |

### 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) | 1.590732 / 1.841788 (-0.251056) | 23.736918 / 8.074308 (15.662609) | 21.223910 / 10.191392 (11.032518) | 0.236173 / 0.680424 (-0.444251) | 0.030056 / 0.534201 (-0.504145) | 0.489461 / 0.579283 (-0.089822) | 0.607582 / 0.434364 (0.173218) | 0.539889 / 0.540337 (-0.000449) | 0.817942 / 1.386936 (-0.568994) |

</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) | 0.008042 / 0.011353 (-0.003311) | 0.004836 / 0.011008 (-0.006173) | 0.075434 / 0.038508 (0.036926) | 0.080818 / 0.023109 (0.057709) | 0.474797 / 0.275898 (0.198899) | 0.526168 / 0.323480 (0.202689) | 0.006463 / 0.007986 (-0.001522) | 0.004031 / 0.004328 (-0.000297) | 0.074141 / 0.004250 (0.069891) | 0.068265 / 0.037052 (0.031212) | 0.562550 / 0.258489 (0.304061) | 0.544820 / 0.293841 (0.250979) | 0.047263 / 0.128546 (-0.081283) | 0.014113 / 0.075646 (-0.061534) | 0.086061 / 0.419271 (-0.333210) | 0.062475 / 0.043533 (0.018942) | 0.479912 / 0.255139 (0.224773) | 0.494784 / 0.283200 (0.211584) | 0.035847 / 0.141683 (-0.105836) | 1.726452 / 1.452155 (0.274297) | 1.770113 / 1.492716 (0.277396) |

### 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) | 0.286713 / 0.018006 (0.268707) | 0.609704 / 0.000490 (0.609214) | 0.009342 / 0.000200 (0.009143) | 0.000134 / 0.000054 (0.000080) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.035137 / 0.037411 (-0.002275) | 0.099331 / 0.014526 (0.084805) | 0.108971 / 0.176557 (-0.067586) | 0.170952 / 0.737135 (-0.566183) | 0.111736 / 0.296338 (-0.184603) |

### 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) | 0.617434 / 0.215209 (0.402225) | 6.204351 / 2.077655 (4.126697) | 2.854347 / 1.504120 (1.350227) | 2.557424 / 1.541195 (1.016229) | 2.638173 / 1.468490 (1.169683) | 0.854234 / 4.584777 (-3.730543) | 5.383288 / 3.745712 (1.637576) | 4.698098 / 5.269862 (-0.571763) | 2.903860 / 4.565676 (-1.661817) | 0.094689 / 0.424275 (-0.329586) | 0.007892 / 0.007607 (0.000285) | 0.729420 / 0.226044 (0.503376) | 7.356691 / 2.268929 (5.087763) | 3.708039 / 55.444624 (-51.736585) | 2.979734 / 6.876477 (-3.896743) | 2.978983 / 2.142072 (0.836911) | 1.040554 / 4.805227 (-3.764673) | 0.211246 / 6.500664 (-6.289418) | 0.079880 / 0.075469 (0.004411) |

### 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) | 1.676057 / 1.841788 (-0.165731) | 23.428443 / 8.074308 (15.354135) | 21.016293 / 10.191392 (10.824901) | 0.260927 / 0.680424 (-0.419497) | 0.030689 / 0.534201 (-0.503512) | 0.495652 / 0.579283 (-0.083632) | 0.622976 / 0.434364 (0.188612) | 0.561175 / 0.540337 (0.020837) | 0.786733 / 1.386936 (-0.600203) |

</details>
</details>

![](https://cml.dev/watermark.png#fb621b9630a69643255d25f192fdb011935122b1 "CML watermark")


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

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

PyArrow==8.0.0

<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) | 0.005942 / 0.011353 (-0.005410) | 0.003706 / 0.011008 (-0.007302) | 0.081002 / 0.038508 (0.042493) | 0.056854 / 0.023109 (0.033745) | 0.358668 / 0.275898 (0.082770) | 0.369718 / 0.323480 (0.046238) | 0.005202 / 0.007986 (-0.002784) | 0.002841 / 0.004328 (-0.001487) | 0.062976 / 0.004250 (0.058726) | 0.051308 / 0.037052 (0.014255) | 0.373636 / 0.258489 (0.115147) | 0.390480 / 0.293841 (0.096639) | 0.027480 / 0.128546 (-0.101067) | 0.007960 / 0.075646 (-0.067686) | 0.262719 / 0.419271 (-0.156552) | 0.046488 / 0.043533 (0.002955) | 0.347299 / 0.255139 (0.092160) | 0.393448 / 0.283200 (0.110249) | 0.019445 / 0.141683 (-0.122238) | 1.431314 / 1.452155 (-0.020841) | 1.495578 / 1.492716 (0.002862) |

### 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) | 0.223724 / 0.018006 (0.205718) | 0.416929 / 0.000490 (0.416440) | 0.005253 / 0.000200 (0.005053) | 0.000217 / 0.000054 (0.000163) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.023571 / 0.037411 (-0.013841) | 0.073503 / 0.014526 (0.058978) | 0.081366 / 0.176557 (-0.095190) | 0.142716 / 0.737135 (-0.594420) | 0.082612 / 0.296338 (-0.213727) |

### 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) | 0.407319 / 0.215209 (0.192109) | 4.141404 / 2.077655 (2.063749) | 1.910842 / 1.504120 (0.406722) | 1.731694 / 1.541195 (0.190499) | 1.805228 / 1.468490 (0.336738) | 0.497109 / 4.584777 (-4.087668) | 3.107624 / 3.745712 (-0.638088) | 2.890687 / 5.269862 (-2.379174) | 1.795913 / 4.565676 (-2.769763) | 0.057099 / 0.424275 (-0.367176) | 0.006414 / 0.007607 (-0.001194) | 0.482127 / 0.226044 (0.256083) | 4.835158 / 2.268929 (2.566229) | 2.368909 / 55.444624 (-53.075715) | 2.001608 / 6.876477 (-4.874868) | 2.004492 / 2.142072 (-0.137580) | 0.579910 / 4.805227 (-4.225317) | 0.123541 / 6.500664 (-6.377123) | 0.059651 / 0.075469 (-0.015818) |

### 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) | 1.242364 / 1.841788 (-0.599424) | 16.982676 / 8.074308 (8.908368) | 13.718885 / 10.191392 (3.527493) | 0.132759 / 0.680424 (-0.547665) | 0.017012 / 0.534201 (-0.517189) | 0.333447 / 0.579283 (-0.245836) | 0.360149 / 0.434364 (-0.074215) | 0.385526 / 0.540337 (-0.154811) | 0.536915 / 1.386936 (-0.850021) |

</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) | 0.005946 / 0.011353 (-0.005407) | 0.003442 / 0.011008 (-0.007566) | 0.062595 / 0.038508 (0.024087) | 0.058699 / 0.023109 (0.035590) | 0.442626 / 0.275898 (0.166728) | 0.473773 / 0.323480 (0.150293) | 0.004622 / 0.007986 (-0.003364) | 0.002812 / 0.004328 (-0.001516) | 0.064099 / 0.004250 (0.059849) | 0.046784 / 0.037052 (0.009731) | 0.466049 / 0.258489 (0.207560) | 0.487912 / 0.293841 (0.194071) | 0.028372 / 0.128546 (-0.100174) | 0.007992 / 0.075646 (-0.067654) | 0.068151 / 0.419271 (-0.351120) | 0.041010 / 0.043533 (-0.002523) | 0.442331 / 0.255139 (0.187192) | 0.469686 / 0.283200 (0.186487) | 0.019694 / 0.141683 (-0.121989) | 1.467928 / 1.452155 (0.015774) | 1.525635 / 1.492716 (0.032918) |

### 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) | 0.204459 / 0.018006 (0.186453) | 0.407766 / 0.000490 (0.407276) | 0.003898 / 0.000200 (0.003698) | 0.000077 / 0.000054 (0.000023) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.025909 / 0.037411 (-0.011503) | 0.080341 / 0.014526 (0.065816) | 0.088231 / 0.176557 (-0.088325) | 0.144056 / 0.737135 (-0.593079) | 0.089769 / 0.296338 (-0.206569) |

### 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) | 0.462876 / 0.215209 (0.247667) | 4.625983 / 2.077655 (2.548329) | 2.580079 / 1.504120 (1.075959) | 2.402792 / 1.541195 (0.861597) | 2.424982 / 1.468490 (0.956491) | 0.503654 / 4.584777 (-4.081123) | 3.178995 / 3.745712 (-0.566717) | 2.956126 / 5.269862 (-2.313735) | 1.847837 / 4.565676 (-2.717840) | 0.057964 / 0.424275 (-0.366311) | 0.006405 / 0.007607 (-0.001202) | 0.536036 / 0.226044 (0.309992) | 5.374416 / 2.268929 (3.105487) | 3.036440 / 55.444624 (-52.408184) | 2.682054 / 6.876477 (-4.194422) | 2.683462 / 2.142072 (0.541390) | 0.592751 / 4.805227 (-4.212477) | 0.124313 / 6.500664 (-6.376351) | 0.061127 / 0.075469 (-0.014342) |

### 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) | 1.383539 / 1.841788 (-0.458249) | 17.766221 / 8.074308 (9.691913) | 15.306600 / 10.191392 (5.115208) | 0.145035 / 0.680424 (-0.535389) | 0.018078 / 0.534201 (-0.516123) | 0.330102 / 0.579283 (-0.249181) | 0.375380 / 0.434364 (-0.058984) | 0.388531 / 0.540337 (-0.151807) | 0.548720 / 1.386936 (-0.838216) |

</details>
</details>

![](https://cml.dev/watermark.png#0082342ac792a05f4a615e4985d1c791e155115a "CML watermark")


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

PyArrow==8.0.0

<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) | 0.006757 / 0.011353 (-0.004596) | 0.004110 / 0.011008 (-0.006898) | 0.084727 / 0.038508 (0.046219) | 0.074328 / 0.023109 (0.051219) | 0.310467 / 0.275898 (0.034569) | 0.343209 / 0.323480 (0.019729) | 0.004228 / 0.007986 (-0.003757) | 0.003400 / 0.004328 (-0.000929) | 0.065546 / 0.004250 (0.061296) | 0.063057 / 0.037052 (0.026005) | 0.315023 / 0.258489 (0.056534) | 0.356395 / 0.293841 (0.062554) | 0.031959 / 0.128546 (-0.096588) | 0.008577 / 0.075646 (-0.067069) | 0.289075 / 0.419271 (-0.130196) | 0.055011 / 0.043533 (0.011478) | 0.308861 / 0.255139 (0.053722) | 0.328691 / 0.283200 (0.045491) | 0.027037 / 0.141683 (-0.114646) | 1.464314 / 1.452155 (0.012159) | 1.549644 / 1.492716 (0.056927) |

### 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) | 0.238330 / 0.018006 (0.220324) | 0.451570 / 0.000490 (0.451080) | 0.010873 / 0.000200 (0.010673) | 0.000341 / 0.000054 (0.000286) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.029909 / 0.037411 (-0.007503) | 0.085222 / 0.014526 (0.070696) | 0.100180 / 0.176557 (-0.076377) | 0.154842 / 0.737135 (-0.582293) | 0.099253 / 0.296338 (-0.197086) |

### 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) | 0.401603 / 0.215209 (0.186394) | 4.009781 / 2.077655 (1.932126) | 2.021807 / 1.504120 (0.517687) | 1.861017 / 1.541195 (0.319822) | 2.009072 / 1.468490 (0.540582) | 0.483798 / 4.584777 (-4.100979) | 3.580394 / 3.745712 (-0.165318) | 3.464587 / 5.269862 (-1.805275) | 2.018400 / 4.565676 (-2.547276) | 0.057134 / 0.424275 (-0.367141) | 0.007303 / 0.007607 (-0.000304) | 0.473627 / 0.226044 (0.247582) | 4.722634 / 2.268929 (2.453706) | 2.490884 / 55.444624 (-52.953741) | 2.121568 / 6.876477 (-4.754909) | 2.200699 / 2.142072 (0.058626) | 0.576728 / 4.805227 (-4.228499) | 0.135633 / 6.500664 (-6.365032) | 0.061625 / 0.075469 (-0.013844) |

### 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) | 1.250545 / 1.841788 (-0.591243) | 19.167642 / 8.074308 (11.093334) | 14.189891 / 10.191392 (3.998499) | 0.164552 / 0.680424 (-0.515872) | 0.018215 / 0.534201 (-0.515986) | 0.389962 / 0.579283 (-0.189321) | 0.413972 / 0.434364 (-0.020392) | 0.460253 / 0.540337 (-0.080085) | 0.647897 / 1.386936 (-0.739039) |

</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) | 0.006714 / 0.011353 (-0.004639) | 0.004081 / 0.011008 (-0.006927) | 0.065627 / 0.038508 (0.027119) | 0.077644 / 0.023109 (0.054535) | 0.409950 / 0.275898 (0.134052) | 0.442940 / 0.323480 (0.119460) | 0.005523 / 0.007986 (-0.002463) | 0.003366 / 0.004328 (-0.000962) | 0.065425 / 0.004250 (0.061174) | 0.056222 / 0.037052 (0.019169) | 0.429928 / 0.258489 (0.171439) | 0.457136 / 0.293841 (0.163296) | 0.032356 / 0.128546 (-0.096190) | 0.008676 / 0.075646 (-0.066970) | 0.071785 / 0.419271 (-0.347486) | 0.048458 / 0.043533 (0.004925) | 0.408003 / 0.255139 (0.152864) | 0.433529 / 0.283200 (0.150330) | 0.023232 / 0.141683 (-0.118450) | 1.483640 / 1.452155 (0.031485) | 1.552425 / 1.492716 (0.059709) |

### 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) | 0.282347 / 0.018006 (0.264341) | 0.448742 / 0.000490 (0.448253) | 0.039590 / 0.000200 (0.039390) | 0.000407 / 0.000054 (0.000353) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.032516 / 0.037411 (-0.004896) | 0.095269 / 0.014526 (0.080744) | 0.106363 / 0.176557 (-0.070193) | 0.157945 / 0.737135 (-0.579191) | 0.106783 / 0.296338 (-0.189556) |

### 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) | 0.436334 / 0.215209 (0.221125) | 4.348147 / 2.077655 (2.270492) | 2.326830 / 1.504120 (0.822710) | 2.162586 / 1.541195 (0.621391) | 2.257769 / 1.468490 (0.789279) | 0.491677 / 4.584777 (-4.093099) | 3.707385 / 3.745712 (-0.038328) | 3.567147 / 5.269862 (-1.702715) | 2.099451 / 4.565676 (-2.466226) | 0.058486 / 0.424275 (-0.365789) | 0.007324 / 0.007607 (-0.000283) | 0.510962 / 0.226044 (0.284917) | 5.106550 / 2.268929 (2.837622) | 2.785723 / 55.444624 (-52.658901) | 2.452928 / 6.876477 (-4.423548) | 2.545034 / 2.142072 (0.402961) | 0.611124 / 4.805227 (-4.194103) | 0.133503 / 6.500664 (-6.367161) | 0.061118 / 0.075469 (-0.014351) |

### 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) | 1.386640 / 1.841788 (-0.455148) | 20.485670 / 8.074308 (12.411362) | 15.332223 / 10.191392 (5.140831) | 0.164070 / 0.680424 (-0.516354) | 0.019962 / 0.534201 (-0.514239) | 0.394217 / 0.579283 (-0.185066) | 0.428442 / 0.434364 (-0.005922) | 0.473784 / 0.540337 (-0.066553) | 0.665141 / 1.386936 (-0.721795) |

</details>
</details>

![](https://cml.dev/watermark.png#c722eb75a6cc56eac530c44a17ff679ca805aa89 "CML watermark")


The CI errors seem unrelated to this PR but I think they need further investigation in another PR.
```
FAILED tests/test_upstream_hub.py::TestPushToHub::test_push_dataset_dict_to_hub_multiple_files - KeyError: 'url'
```

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

PyArrow==8.0.0

<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) | 0.008766 / 0.011353 (-0.002587) | 0.005289 / 0.011008 (-0.005720) | 0.097220 / 0.038508 (0.058712) | 0.072246 / 0.023109 (0.049137) | 0.369359 / 0.275898 (0.093461) | 0.422571 / 0.323480 (0.099091) | 0.004941 / 0.007986 (-0.003044) | 0.006103 / 0.004328 (0.001774) | 0.075828 / 0.004250 (0.071578) | 0.065795 / 0.037052 (0.028743) | 0.412835 / 0.258489 (0.154346) | 0.430062 / 0.293841 (0.136221) | 0.045806 / 0.128546 (-0.082741) | 0.013760 / 0.075646 (-0.061887) | 0.351542 / 0.419271 (-0.067729) | 0.064836 / 0.043533 (0.021304) | 0.370162 / 0.255139 (0.115023) | 0.434949 / 0.283200 (0.151749) | 0.039198 / 0.141683 (-0.102485) | 1.670940 / 1.452155 (0.218785) | 1.809677 / 1.492716 (0.316961) |

### 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) | 0.295104 / 0.018006 (0.277097) | 0.594584 / 0.000490 (0.594095) | 0.010923 / 0.000200 (0.010723) | 0.000479 / 0.000054 (0.000425) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.029174 / 0.037411 (-0.008237) | 0.094637 / 0.014526 (0.080111) | 0.102948 / 0.176557 (-0.073608) | 0.171048 / 0.737135 (-0.566087) | 0.111465 / 0.296338 (-0.184873) |

### 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) | 0.582017 / 0.215209 (0.366808) | 5.727008 / 2.077655 (3.649354) | 2.563211 / 1.504120 (1.059091) | 2.308912 / 1.541195 (0.767717) | 2.301258 / 1.468490 (0.832768) | 0.819594 / 4.584777 (-3.765183) | 5.177536 / 3.745712 (1.431824) | 4.473602 / 5.269862 (-0.796260) | 2.743819 / 4.565676 (-1.821857) | 0.090052 / 0.424275 (-0.334223) | 0.007903 / 0.007607 (0.000295) | 0.679142 / 0.226044 (0.453097) | 6.887891 / 2.268929 (4.618962) | 3.337926 / 55.444624 (-52.106699) | 2.659228 / 6.876477 (-4.217249) | 2.641289 / 2.142072 (0.499216) | 0.974829 / 4.805227 (-3.830398) | 0.205775 / 6.500664 (-6.294890) | 0.075268 / 0.075469 (-0.000201) |

### 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) | 1.500562 / 1.841788 (-0.341226) | 22.688483 / 8.074308 (14.614175) | 19.634878 / 10.191392 (9.443486) | 0.227409 / 0.680424 (-0.453015) | 0.029794 / 0.534201 (-0.504407) | 0.475204 / 0.579283 (-0.104079) | 0.579379 / 0.434364 (0.145016) | 0.541244 / 0.540337 (0.000907) | 0.739187 / 1.386936 (-0.647749) |

</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) | 0.008641 / 0.011353 (-0.002712) | 0.006139 / 0.011008 (-0.004870) | 0.075048 / 0.038508 (0.036540) | 0.074070 / 0.023109 (0.050961) | 0.508288 / 0.275898 (0.232390) | 0.539770 / 0.323480 (0.216290) | 0.006092 / 0.007986 (-0.001894) | 0.003748 / 0.004328 (-0.000581) | 0.077945 / 0.004250 (0.073695) | 0.056989 / 0.037052 (0.019936) | 0.526889 / 0.258489 (0.268400) | 0.560862 / 0.293841 (0.267021) | 0.046507 / 0.128546 (-0.082040) | 0.013249 / 0.075646 (-0.062397) | 0.088363 / 0.419271 (-0.330908) | 0.058776 / 0.043533 (0.015243) | 0.495869 / 0.255139 (0.240730) | 0.538615 / 0.283200 (0.255415) | 0.034055 / 0.141683 (-0.107628) | 1.658713 / 1.452155 (0.206558) | 1.736599 / 1.492716 (0.243883) |

### 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) | 0.288355 / 0.018006 (0.270349) | 0.571481 / 0.000490 (0.570991) | 0.006765 / 0.000200 (0.006565) | 0.000101 / 0.000054 (0.000047) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.031836 / 0.037411 (-0.005575) | 0.101312 / 0.014526 (0.086786) | 0.111433 / 0.176557 (-0.065124) | 0.169599 / 0.737135 (-0.567536) | 0.114595 / 0.296338 (-0.181743) |

### 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) | 0.645258 / 0.215209 (0.430049) | 6.446653 / 2.077655 (4.368998) | 2.983498 / 1.504120 (1.479379) | 2.573820 / 1.541195 (1.032625) | 2.624286 / 1.468490 (1.155796) | 0.815997 / 4.584777 (-3.768780) | 5.140248 / 3.745712 (1.394536) | 4.636915 / 5.269862 (-0.632947) | 2.866313 / 4.565676 (-1.699364) | 0.096643 / 0.424275 (-0.327633) | 0.008452 / 0.007607 (0.000845) | 0.765837 / 0.226044 (0.539793) | 7.622897 / 2.268929 (5.353968) | 3.796247 / 55.444624 (-51.648378) | 3.019349 / 6.876477 (-3.857128) | 3.034187 / 2.142072 (0.892115) | 1.001682 / 4.805227 (-3.803546) | 0.211841 / 6.500664 (-6.288823) | 0.073351 / 0.075469 (-0.002119) |

### 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) | 1.740254 / 1.841788 (-0.101534) | 23.465619 / 8.074308 (15.391311) | 21.651670 / 10.191392 (11.460278) | 0.226129 / 0.680424 (-0.454294) | 0.029611 / 0.534201 (-0.504590) | 0.441140 / 0.579283 (-0.138143) | 0.605591 / 0.434364 (0.171227) | 0.552427 / 0.540337 (0.012090) | 0.771975 / 1.386936 (-0.614961) |

</details>
</details>

![](https://cml.dev/watermark.png#ef5751522c424c758df0647ff9a449b8b0404b6a "CML watermark")


> The CI errors seem unrelated to this PR but I think they need further investigation in another PR.
> 
> ```
> FAILED tests/test_upstream_hub.py::TestPushToHub::test_push_dataset_dict_to_hub_multiple_files - KeyError: 'url'
> ```

We need to wait for `huggingface_hub`'s next release to fix this (see https://github.com/huggingface/huggingface_hub/pull/1675; 409 error is currently ignored, hence the `KeyError`)

Also, we should be able to fix `test_push_dataset_dict_to_hub_overwrite_files` by inserting `gc.collect()` (to drop the  "reference" to an Arrow file) between the `load_dataset` calls to avoid the `PermissionError` (also reported in https://github.com/huggingface/datasets/issues/3139)

(Indeed, this can be addressed in subsequent PRs.)



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

PyArrow==8.0.0

<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) | 0.008988 / 0.011353 (-0.002365) | 0.005270 / 0.011008 (-0.005738) | 0.114577 / 0.038508 (0.076068) | 0.091630 / 0.023109 (0.068521) | 0.409217 / 0.275898 (0.133319) | 0.440903 / 0.323480 (0.117424) | 0.005226 / 0.007986 (-0.002760) | 0.004289 / 0.004328 (-0.000040) | 0.082246 / 0.004250 (0.077995) | 0.084926 / 0.037052 (0.047873) | 0.407822 / 0.258489 (0.149333) | 0.440891 / 0.293841 (0.147051) | 0.052225 / 0.128546 (-0.076321) | 0.014218 / 0.075646 (-0.061429) | 0.436994 / 0.419271 (0.017722) | 0.066433 / 0.043533 (0.022901) | 0.413909 / 0.255139 (0.158770) | 0.425729 / 0.283200 (0.142530) | 0.039576 / 0.141683 (-0.102107) | 1.905604 / 1.452155 (0.453449) | 1.907032 / 1.492716 (0.414315) |

### 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) | 0.313662 / 0.018006 (0.295655) | 0.614541 / 0.000490 (0.614051) | 0.015631 / 0.000200 (0.015431) | 0.000507 / 0.000054 (0.000453) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.029049 / 0.037411 (-0.008362) | 0.094626 / 0.014526 (0.080100) | 0.104718 / 0.176557 (-0.071838) | 0.187346 / 0.737135 (-0.549790) | 0.108001 / 0.296338 (-0.188337) |

### 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) | 0.578997 / 0.215209 (0.363788) | 5.815546 / 2.077655 (3.737892) | 2.411301 / 1.504120 (0.907181) | 2.110088 / 1.541195 (0.568893) | 2.147839 / 1.468490 (0.679349) | 0.861285 / 4.584777 (-3.723492) | 5.264245 / 3.745712 (1.518533) | 4.695786 / 5.269862 (-0.574076) | 2.867522 / 4.565676 (-1.698154) | 0.096523 / 0.424275 (-0.327752) | 0.008777 / 0.007607 (0.001170) | 0.716316 / 0.226044 (0.490272) | 7.257574 / 2.268929 (4.988645) | 3.141502 / 55.444624 (-52.303123) | 2.480604 / 6.876477 (-4.395872) | 2.530031 / 2.142072 (0.387958) | 1.054274 / 4.805227 (-3.750953) | 0.210781 / 6.500664 (-6.289883) | 0.073837 / 0.075469 (-0.001632) |

### 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) | 1.607689 / 1.841788 (-0.234099) | 23.856780 / 8.074308 (15.782472) | 19.507196 / 10.191392 (9.315804) | 0.232712 / 0.680424 (-0.447712) | 0.027037 / 0.534201 (-0.507164) | 0.466613 / 0.579283 (-0.112670) | 0.571139 / 0.434364 (0.136775) | 0.543109 / 0.540337 (0.002771) | 0.785558 / 1.386936 (-0.601378) |

</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) | 0.008104 / 0.011353 (-0.003249) | 0.004923 / 0.011008 (-0.006086) | 0.075093 / 0.038508 (0.036585) | 0.075218 / 0.023109 (0.052109) | 0.476615 / 0.275898 (0.200717) | 0.506984 / 0.323480 (0.183504) | 0.006371 / 0.007986 (-0.001614) | 0.004818 / 0.004328 (0.000489) | 0.075634 / 0.004250 (0.071383) | 0.059513 / 0.037052 (0.022461) | 0.523763 / 0.258489 (0.265274) | 0.531858 / 0.293841 (0.238017) | 0.048168 / 0.128546 (-0.080379) | 0.014110 / 0.075646 (-0.061537) | 0.086052 / 0.419271 (-0.333219) | 0.058369 / 0.043533 (0.014836) | 0.475537 / 0.255139 (0.220398) | 0.509429 / 0.283200 (0.226229) | 0.033924 / 0.141683 (-0.107758) | 1.657490 / 1.452155 (0.205336) | 1.762544 / 1.492716 (0.269828) |

### 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) | 0.263863 / 0.018006 (0.245857) | 0.584468 / 0.000490 (0.583978) | 0.007063 / 0.000200 (0.006863) | 0.000181 / 0.000054 (0.000126) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.032229 / 0.037411 (-0.005183) | 0.096750 / 0.014526 (0.082224) | 0.117798 / 0.176557 (-0.058758) | 0.173376 / 0.737135 (-0.563760) | 0.117241 / 0.296338 (-0.179098) |

### 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) | 0.701935 / 0.215209 (0.486726) | 6.544655 / 2.077655 (4.467001) | 3.055531 / 1.504120 (1.551411) | 2.896339 / 1.541195 (1.355144) | 3.013157 / 1.468490 (1.544667) | 0.852989 / 4.584777 (-3.731788) | 5.399355 / 3.745712 (1.653643) | 5.119811 / 5.269862 (-0.150051) | 3.167269 / 4.565676 (-1.398407) | 0.096962 / 0.424275 (-0.327313) | 0.008843 / 0.007607 (0.001236) | 0.776170 / 0.226044 (0.550125) | 7.735093 / 2.268929 (5.466164) | 3.792629 / 55.444624 (-51.651996) | 3.249911 / 6.876477 (-3.626565) | 3.235590 / 2.142072 (1.093517) | 1.046426 / 4.805227 (-3.758801) | 0.239854 / 6.500664 (-6.260810) | 0.100648 / 0.075469 (0.025179) |

### 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) | 1.774488 / 1.841788 (-0.067300) | 25.646958 / 8.074308 (17.572650) | 23.181577 / 10.191392 (12.990185) | 0.231948 / 0.680424 (-0.448476) | 0.030147 / 0.534201 (-0.504054) | 0.464161 / 0.579283 (-0.115122) | 0.598980 / 0.434364 (0.164616) | 0.571156 / 0.540337 (0.030819) | 0.833221 / 1.386936 (-0.553715) |

</details>
</details>

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

PyArrow==8.0.0

<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) | 0.006010 / 0.011353 (-0.005343) | 0.003662 / 0.011008 (-0.007346) | 0.079971 / 0.038508 (0.041463) | 0.066790 / 0.023109 (0.043681) | 0.311387 / 0.275898 (0.035489) | 0.346781 / 0.323480 (0.023301) | 0.003500 / 0.007986 (-0.004485) | 0.002831 / 0.004328 (-0.001498) | 0.063238 / 0.004250 (0.058988) | 0.056163 / 0.037052 (0.019110) | 0.317456 / 0.258489 (0.058967) | 0.356106 / 0.293841 (0.062265) | 0.027358 / 0.128546 (-0.101188) | 0.007906 / 0.075646 (-0.067741) | 0.261779 / 0.419271 (-0.157492) | 0.046385 / 0.043533 (0.002852) | 0.312587 / 0.255139 (0.057448) | 0.339513 / 0.283200 (0.056314) | 0.021474 / 0.141683 (-0.120209) | 1.418637 / 1.452155 (-0.033518) | 1.510257 / 1.492716 (0.017540) |

### 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) | 0.211761 / 0.018006 (0.193755) | 0.424387 / 0.000490 (0.423898) | 0.002579 / 0.000200 (0.002379) | 0.000065 / 0.000054 (0.000011) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.024038 / 0.037411 (-0.013374) | 0.072524 / 0.014526 (0.057998) | 0.083443 / 0.176557 (-0.093113) | 0.144835 / 0.737135 (-0.592300) | 0.084754 / 0.296338 (-0.211585) |

### 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) | 0.392423 / 0.215209 (0.177214) | 3.927220 / 2.077655 (1.849565) | 1.877853 / 1.504120 (0.373733) | 1.699275 / 1.541195 (0.158081) | 1.793144 / 1.468490 (0.324654) | 0.503809 / 4.584777 (-4.080968) | 3.052569 / 3.745712 (-0.693143) | 2.907432 / 5.269862 (-2.362429) | 1.811220 / 4.565676 (-2.754457) | 0.057249 / 0.424275 (-0.367026) | 0.006433 / 0.007607 (-0.001174) | 0.463257 / 0.226044 (0.237213) | 4.631038 / 2.268929 (2.362109) | 2.315870 / 55.444624 (-53.128754) | 2.000476 / 6.876477 (-4.876001) | 2.043581 / 2.142072 (-0.098492) | 0.588911 / 4.805227 (-4.216317) | 0.125370 / 6.500664 (-6.375295) | 0.061721 / 0.075469 (-0.013748) |

### 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) | 1.244486 / 1.841788 (-0.597301) | 17.862422 / 8.074308 (9.788114) | 13.890205 / 10.191392 (3.698813) | 0.145467 / 0.680424 (-0.534957) | 0.016856 / 0.534201 (-0.517345) | 0.329357 / 0.579283 (-0.249926) | 0.367550 / 0.434364 (-0.066814) | 0.377541 / 0.540337 (-0.162796) | 0.534087 / 1.386936 (-0.852849) |

</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) | 0.006030 / 0.011353 (-0.005323) | 0.003650 / 0.011008 (-0.007359) | 0.063300 / 0.038508 (0.024792) | 0.058877 / 0.023109 (0.035767) | 0.454662 / 0.275898 (0.178764) | 0.489362 / 0.323480 (0.165882) | 0.004856 / 0.007986 (-0.003130) | 0.002909 / 0.004328 (-0.001420) | 0.063356 / 0.004250 (0.059105) | 0.047867 / 0.037052 (0.010814) | 0.465461 / 0.258489 (0.206972) | 0.506684 / 0.293841 (0.212843) | 0.028599 / 0.128546 (-0.099947) | 0.008076 / 0.075646 (-0.067570) | 0.068695 / 0.419271 (-0.350576) | 0.041487 / 0.043533 (-0.002045) | 0.448676 / 0.255139 (0.193537) | 0.471206 / 0.283200 (0.188007) | 0.020401 / 0.141683 (-0.121282) | 1.461181 / 1.452155 (0.009026) | 1.517079 / 1.492716 (0.024363) |

### 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) | 0.222827 / 0.018006 (0.204821) | 0.425074 / 0.000490 (0.424585) | 0.004153 / 0.000200 (0.003953) | 0.000081 / 0.000054 (0.000026) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.026980 / 0.037411 (-0.010431) | 0.080786 / 0.014526 (0.066260) | 0.092040 / 0.176557 (-0.084517) | 0.146082 / 0.737135 (-0.591053) | 0.092739 / 0.296338 (-0.203600) |

### 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) | 0.461663 / 0.215209 (0.246454) | 4.604828 / 2.077655 (2.527173) | 2.566926 / 1.504120 (1.062806) | 2.394419 / 1.541195 (0.853224) | 2.458375 / 1.468490 (0.989885) | 0.505140 / 4.584777 (-4.079637) | 3.155916 / 3.745712 (-0.589796) | 3.014474 / 5.269862 (-2.255388) | 1.900296 / 4.565676 (-2.665380) | 0.058063 / 0.424275 (-0.366212) | 0.006409 / 0.007607 (-0.001198) | 0.541165 / 0.226044 (0.315120) | 5.410700 / 2.268929 (3.141772) | 3.010239 / 55.444624 (-52.434386) | 2.668103 / 6.876477 (-4.208373) | 2.730418 / 2.142072 (0.588346) | 0.603471 / 4.805227 (-4.201756) | 0.129852 / 6.500664 (-6.370812) | 0.061507 / 0.075469 (-0.013962) |

### 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) | 1.355272 / 1.841788 (-0.486516) | 18.170088 / 8.074308 (10.095780) | 15.583855 / 10.191392 (5.392463) | 0.146246 / 0.680424 (-0.534178) | 0.018093 / 0.534201 (-0.516108) | 0.331695 / 0.579283 (-0.247588) | 0.380845 / 0.434364 (-0.053519) | 0.388564 / 0.540337 (-0.151774) | 0.551465 / 1.386936 (-0.835471) |

</details>
</details>

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