Issue: Release: 2.18.0
State: closed
Author: lhoestq


Comments:
The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_6708). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

<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) | 0.005442 / 0.011353 (-0.005910) | 0.003796 / 0.011008 (-0.007213) | 0.063663 / 0.038508 (0.025155) | 0.028901 / 0.023109 (0.005792) | 0.256742 / 0.275898 (-0.019156) | 0.279555 / 0.323480 (-0.043925) | 0.004128 / 0.007986 (-0.003858) | 0.002789 / 0.004328 (-0.001539) | 0.049463 / 0.004250 (0.045213) | 0.043461 / 0.037052 (0.006409) | 0.272975 / 0.258489 (0.014486) | 0.299057 / 0.293841 (0.005216) | 0.029030 / 0.128546 (-0.099516) | 0.010453 / 0.075646 (-0.065193) | 0.207611 / 0.419271 (-0.211660) | 0.037200 / 0.043533 (-0.006332) | 0.258327 / 0.255139 (0.003188) | 0.279746 / 0.283200 (-0.003454) | 0.018940 / 0.141683 (-0.122743) | 1.150379 / 1.452155 (-0.301776) | 1.217621 / 1.492716 (-0.275095) |

### 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) | 0.095115 / 0.018006 (0.077109) | 0.299393 / 0.000490 (0.298903) | 0.000223 / 0.000200 (0.000023) | 0.000044 / 0.000054 (-0.000010) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.018972 / 0.037411 (-0.018439) | 0.061669 / 0.014526 (0.047143) | 0.075605 / 0.176557 (-0.100951) | 0.125695 / 0.737135 (-0.611440) | 0.076654 / 0.296338 (-0.219684) |

### 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) | 0.286431 / 0.215209 (0.071222) | 2.763554 / 2.077655 (0.685899) | 1.489902 / 1.504120 (-0.014218) | 1.375082 / 1.541195 (-0.166113) | 1.418903 / 1.468490 (-0.049587) | 0.555646 / 4.584777 (-4.029131) | 2.410578 / 3.745712 (-1.335134) | 2.827453 / 5.269862 (-2.442408) | 1.764381 / 4.565676 (-2.801295) | 0.062937 / 0.424275 (-0.361339) | 0.004989 / 0.007607 (-0.002619) | 0.342115 / 0.226044 (0.116071) | 3.354660 / 2.268929 (1.085732) | 1.858418 / 55.444624 (-53.586206) | 1.586403 / 6.876477 (-5.290074) | 1.625762 / 2.142072 (-0.516311) | 0.643678 / 4.805227 (-4.161550) | 0.116764 / 6.500664 (-6.383900) | 0.042198 / 0.075469 (-0.033271) |

### 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) | 0.974953 / 1.841788 (-0.866835) | 11.748419 / 8.074308 (3.674111) | 9.753700 / 10.191392 (-0.437692) | 0.131330 / 0.680424 (-0.549094) | 0.018876 / 0.534201 (-0.515325) | 0.290078 / 0.579283 (-0.289205) | 0.264676 / 0.434364 (-0.169688) | 0.340285 / 0.540337 (-0.200052) | 0.445340 / 1.386936 (-0.941596) |

</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) | 0.005513 / 0.011353 (-0.005840) | 0.003665 / 0.011008 (-0.007344) | 0.049368 / 0.038508 (0.010860) | 0.032045 / 0.023109 (0.008936) | 0.280955 / 0.275898 (0.005057) | 0.299804 / 0.323480 (-0.023675) | 0.004391 / 0.007986 (-0.003594) | 0.002896 / 0.004328 (-0.001432) | 0.048914 / 0.004250 (0.044663) | 0.045448 / 0.037052 (0.008396) | 0.298779 / 0.258489 (0.040289) | 0.322012 / 0.293841 (0.028171) | 0.029449 / 0.128546 (-0.099097) | 0.010410 / 0.075646 (-0.065236) | 0.057867 / 0.419271 (-0.361405) | 0.053944 / 0.043533 (0.010411) | 0.278139 / 0.255139 (0.023000) | 0.297453 / 0.283200 (0.014254) | 0.018746 / 0.141683 (-0.122937) | 1.137890 / 1.452155 (-0.314264) | 1.206109 / 1.492716 (-0.286607) |

### 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) | 0.091741 / 0.018006 (0.073735) | 0.300415 / 0.000490 (0.299925) | 0.000214 / 0.000200 (0.000014) | 0.000044 / 0.000054 (-0.000010) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.022097 / 0.037411 (-0.015314) | 0.076853 / 0.014526 (0.062327) | 0.088440 / 0.176557 (-0.088116) | 0.127176 / 0.737135 (-0.609959) | 0.088976 / 0.296338 (-0.207363) |

### 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) | 0.300754 / 0.215209 (0.085545) | 2.917713 / 2.077655 (0.840058) | 1.619338 / 1.504120 (0.115218) | 1.501543 / 1.541195 (-0.039652) | 1.506032 / 1.468490 (0.037542) | 0.579481 / 4.584777 (-4.005296) | 2.458917 / 3.745712 (-1.286795) | 2.754621 / 5.269862 (-2.515241) | 1.796440 / 4.565676 (-2.769237) | 0.067547 / 0.424275 (-0.356728) | 0.005001 / 0.007607 (-0.002606) | 0.351030 / 0.226044 (0.124985) | 3.466282 / 2.268929 (1.197353) | 1.954661 / 55.444624 (-53.489964) | 1.688737 / 6.876477 (-5.187740) | 1.836762 / 2.142072 (-0.305311) | 0.656441 / 4.805227 (-4.148786) | 0.118258 / 6.500664 (-6.382406) | 0.041608 / 0.075469 (-0.033861) |

### 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) | 0.999696 / 1.841788 (-0.842092) | 12.383471 / 8.074308 (4.309162) | 10.338488 / 10.191392 (0.147096) | 0.150214 / 0.680424 (-0.530210) | 0.014997 / 0.534201 (-0.519204) | 0.288949 / 0.579283 (-0.290334) | 0.272012 / 0.434364 (-0.162352) | 0.327253 / 0.540337 (-0.213084) | 0.427594 / 1.386936 (-0.959342) |

</details>
</details>

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