Issue: Release 2.14.2
State: closed
Author: albertvillanova


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) | 0.006543 / 0.011353 (-0.004810) | 0.003894 / 0.011008 (-0.007115) | 0.084742 / 0.038508 (0.046234) | 0.072942 / 0.023109 (0.049833) | 0.310722 / 0.275898 (0.034824) | 0.346806 / 0.323480 (0.023326) | 0.005373 / 0.007986 (-0.002613) | 0.003270 / 0.004328 (-0.001059) | 0.064379 / 0.004250 (0.060128) | 0.054876 / 0.037052 (0.017824) | 0.316794 / 0.258489 (0.058305) | 0.350353 / 0.293841 (0.056512) | 0.030683 / 0.128546 (-0.097863) | 0.008275 / 0.075646 (-0.067371) | 0.288747 / 0.419271 (-0.130525) | 0.051892 / 0.043533 (0.008359) | 0.315060 / 0.255139 (0.059921) | 0.331664 / 0.283200 (0.048464) | 0.023334 / 0.141683 (-0.118349) | 1.499734 / 1.452155 (0.047579) | 1.542006 / 1.492716 (0.049290) |

### 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) | 0.210488 / 0.018006 (0.192482) | 0.462187 / 0.000490 (0.461697) | 0.001280 / 0.000200 (0.001080) | 0.000076 / 0.000054 (0.000021) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.027812 / 0.037411 (-0.009599) | 0.082492 / 0.014526 (0.067966) | 0.096504 / 0.176557 (-0.080053) | 0.158164 / 0.737135 (-0.578972) | 0.096678 / 0.296338 (-0.199661) |

### 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) | 0.403317 / 0.215209 (0.188108) | 4.008367 / 2.077655 (1.930713) | 2.033067 / 1.504120 (0.528947) | 1.869484 / 1.541195 (0.328290) | 1.947450 / 1.468490 (0.478960) | 0.494048 / 4.584777 (-4.090729) | 3.631673 / 3.745712 (-0.114039) | 5.322167 / 5.269862 (0.052306) | 3.125570 / 4.565676 (-1.440107) | 0.057341 / 0.424275 (-0.366934) | 0.007318 / 0.007607 (-0.000289) | 0.483990 / 0.226044 (0.257945) | 4.830573 / 2.268929 (2.561645) | 2.543267 / 55.444624 (-52.901358) | 2.217890 / 6.876477 (-4.658587) | 2.435111 / 2.142072 (0.293038) | 0.597920 / 4.805227 (-4.207307) | 0.132690 / 6.500664 (-6.367974) | 0.060160 / 0.075469 (-0.015309) |

### 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) | 1.247656 / 1.841788 (-0.594131) | 19.436984 / 8.074308 (11.362675) | 14.504249 / 10.191392 (4.312857) | 0.167444 / 0.680424 (-0.512980) | 0.018214 / 0.534201 (-0.515987) | 0.394790 / 0.579283 (-0.184493) | 0.413770 / 0.434364 (-0.020594) | 0.474290 / 0.540337 (-0.066048) | 0.646782 / 1.386936 (-0.740154) |

</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) | 0.006575 / 0.011353 (-0.004778) | 0.003924 / 0.011008 (-0.007084) | 0.064402 / 0.038508 (0.025893) | 0.072569 / 0.023109 (0.049460) | 0.361981 / 0.275898 (0.086083) | 0.398660 / 0.323480 (0.075180) | 0.005380 / 0.007986 (-0.002605) | 0.003355 / 0.004328 (-0.000974) | 0.065173 / 0.004250 (0.060923) | 0.057120 / 0.037052 (0.020067) | 0.366347 / 0.258489 (0.107858) | 0.402723 / 0.293841 (0.108882) | 0.031258 / 0.128546 (-0.097288) | 0.008499 / 0.075646 (-0.067147) | 0.070558 / 0.419271 (-0.348714) | 0.050089 / 0.043533 (0.006556) | 0.361280 / 0.255139 (0.106141) | 0.384497 / 0.283200 (0.101297) | 0.024789 / 0.141683 (-0.116893) | 1.492577 / 1.452155 (0.040422) | 1.572242 / 1.492716 (0.079525) |

### 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) | 0.228054 / 0.018006 (0.210048) | 0.448317 / 0.000490 (0.447828) | 0.000368 / 0.000200 (0.000168) | 0.000056 / 0.000054 (0.000001) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.030575 / 0.037411 (-0.006836) | 0.088604 / 0.014526 (0.074078) | 0.099317 / 0.176557 (-0.077239) | 0.152455 / 0.737135 (-0.584680) | 0.100444 / 0.296338 (-0.195894) |

### 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) | 0.411876 / 0.215209 (0.196667) | 4.108187 / 2.077655 (2.030532) | 2.096371 / 1.504120 (0.592251) | 1.923532 / 1.541195 (0.382337) | 1.998345 / 1.468490 (0.529855) | 0.483853 / 4.584777 (-4.100924) | 3.622433 / 3.745712 (-0.123279) | 3.254430 / 5.269862 (-2.015431) | 2.044342 / 4.565676 (-2.521334) | 0.056756 / 0.424275 (-0.367519) | 0.007720 / 0.007607 (0.000113) | 0.487656 / 0.226044 (0.261612) | 4.882024 / 2.268929 (2.613096) | 2.585008 / 55.444624 (-52.859616) | 2.229251 / 6.876477 (-4.647225) | 2.408318 / 2.142072 (0.266246) | 0.617537 / 4.805227 (-4.187691) | 0.132102 / 6.500664 (-6.368562) | 0.061694 / 0.075469 (-0.013775) |

### 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) | 1.362077 / 1.841788 (-0.479711) | 19.750714 / 8.074308 (11.676406) | 14.545299 / 10.191392 (4.353907) | 0.168666 / 0.680424 (-0.511758) | 0.018606 / 0.534201 (-0.515595) | 0.394760 / 0.579283 (-0.184523) | 0.410030 / 0.434364 (-0.024334) | 0.464742 / 0.540337 (-0.075596) | 0.610881 / 1.386936 (-0.776055) |

</details>
</details>

![](https://cml.dev/watermark.png#53e8007baeff133aaad8cbb366196be18a5e57fd "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) | 0.005836 / 0.011353 (-0.005517) | 0.003493 / 0.011008 (-0.007515) | 0.079877 / 0.038508 (0.041369) | 0.057299 / 0.023109 (0.034190) | 0.332945 / 0.275898 (0.057047) | 0.386615 / 0.323480 (0.063135) | 0.004437 / 0.007986 (-0.003548) | 0.002758 / 0.004328 (-0.001571) | 0.062668 / 0.004250 (0.058418) | 0.046135 / 0.037052 (0.009083) | 0.346160 / 0.258489 (0.087671) | 0.416720 / 0.293841 (0.122879) | 0.026678 / 0.128546 (-0.101868) | 0.007893 / 0.075646 (-0.067753) | 0.260427 / 0.419271 (-0.158845) | 0.044240 / 0.043533 (0.000707) | 0.328101 / 0.255139 (0.072963) | 0.380072 / 0.283200 (0.096872) | 0.020813 / 0.141683 (-0.120870) | 1.400202 / 1.452155 (-0.051952) | 1.475627 / 1.492716 (-0.017089) |

### 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) | 0.174479 / 0.018006 (0.156473) | 0.413810 / 0.000490 (0.413320) | 0.003059 / 0.000200 (0.002860) | 0.000212 / 0.000054 (0.000157) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.023422 / 0.037411 (-0.013990) | 0.071519 / 0.014526 (0.056993) | 0.080555 / 0.176557 (-0.096001) | 0.143825 / 0.737135 (-0.593311) | 0.081182 / 0.296338 (-0.215157) |

### 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) | 0.406858 / 0.215209 (0.191648) | 4.161475 / 2.077655 (2.083820) | 1.991800 / 1.504120 (0.487680) | 1.811224 / 1.541195 (0.270030) | 1.828809 / 1.468490 (0.360318) | 0.504882 / 4.584777 (-4.079895) | 2.985010 / 3.745712 (-0.760703) | 3.984856 / 5.269862 (-1.285006) | 2.477936 / 4.565676 (-2.087740) | 0.057553 / 0.424275 (-0.366722) | 0.006436 / 0.007607 (-0.001172) | 0.488061 / 0.226044 (0.262016) | 4.805501 / 2.268929 (2.536573) | 2.446508 / 55.444624 (-52.998116) | 2.051406 / 6.876477 (-4.825071) | 2.177696 / 2.142072 (0.035623) | 0.588021 / 4.805227 (-4.217207) | 0.125118 / 6.500664 (-6.375546) | 0.060885 / 0.075469 (-0.014584) |

### 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) | 1.197130 / 1.841788 (-0.644658) | 17.867450 / 8.074308 (9.793142) | 13.536895 / 10.191392 (3.345503) | 0.137603 / 0.680424 (-0.542821) | 0.016706 / 0.534201 (-0.517495) | 0.327642 / 0.579283 (-0.251641) | 0.347201 / 0.434364 (-0.087163) | 0.379570 / 0.540337 (-0.160768) | 0.517825 / 1.386936 (-0.869111) |

</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) | 0.005769 / 0.011353 (-0.005584) | 0.003414 / 0.011008 (-0.007594) | 0.063198 / 0.038508 (0.024690) | 0.056020 / 0.023109 (0.032911) | 0.393333 / 0.275898 (0.117435) | 0.421166 / 0.323480 (0.097686) | 0.004360 / 0.007986 (-0.003626) | 0.002860 / 0.004328 (-0.001469) | 0.062712 / 0.004250 (0.058461) | 0.045363 / 0.037052 (0.008311) | 0.413156 / 0.258489 (0.154667) | 0.422897 / 0.293841 (0.129056) | 0.027092 / 0.128546 (-0.101455) | 0.007960 / 0.075646 (-0.067687) | 0.068531 / 0.419271 (-0.350740) | 0.041402 / 0.043533 (-0.002131) | 0.377008 / 0.255139 (0.121869) | 0.409142 / 0.283200 (0.125942) | 0.019707 / 0.141683 (-0.121976) | 1.440556 / 1.452155 (-0.011599) | 1.487403 / 1.492716 (-0.005314) |

### 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) | 0.224355 / 0.018006 (0.206349) | 0.397855 / 0.000490 (0.397365) | 0.000363 / 0.000200 (0.000163) | 0.000056 / 0.000054 (0.000001) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.025107 / 0.037411 (-0.012305) | 0.076404 / 0.014526 (0.061878) | 0.083194 / 0.176557 (-0.093362) | 0.135347 / 0.737135 (-0.601789) | 0.084786 / 0.296338 (-0.211553) |

### 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) | 0.433024 / 0.215209 (0.217815) | 4.323879 / 2.077655 (2.246224) | 2.263004 / 1.504120 (0.758884) | 2.072053 / 1.541195 (0.530858) | 2.113916 / 1.468490 (0.645426) | 0.502742 / 4.584777 (-4.082035) | 3.001716 / 3.745712 (-0.743996) | 2.777960 / 5.269862 (-2.491901) | 1.826514 / 4.565676 (-2.739162) | 0.057735 / 0.424275 (-0.366540) | 0.006671 / 0.007607 (-0.000937) | 0.503347 / 0.226044 (0.277303) | 5.037308 / 2.268929 (2.768380) | 2.679146 / 55.444624 (-52.765478) | 2.410899 / 6.876477 (-4.465577) | 2.467341 / 2.142072 (0.325268) | 0.589824 / 4.805227 (-4.215403) | 0.125529 / 6.500664 (-6.375135) | 0.061950 / 0.075469 (-0.013520) |

### 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) | 1.304128 / 1.841788 (-0.537659) | 17.950215 / 8.074308 (9.875907) | 13.673768 / 10.191392 (3.482376) | 0.129863 / 0.680424 (-0.550561) | 0.016720 / 0.534201 (-0.517481) | 0.329795 / 0.579283 (-0.249488) | 0.339057 / 0.434364 (-0.095307) | 0.382279 / 0.540337 (-0.158059) | 0.507337 / 1.386936 (-0.879599) |

</details>
</details>

![](https://cml.dev/watermark.png#ef05b6f99a2b19990c6f5e4e28d95d28781570db "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) | 0.006199 / 0.011353 (-0.005154) | 0.003749 / 0.011008 (-0.007259) | 0.080600 / 0.038508 (0.042092) | 0.061017 / 0.023109 (0.037908) | 0.319966 / 0.275898 (0.044067) | 0.354937 / 0.323480 (0.031457) | 0.004854 / 0.007986 (-0.003131) | 0.002996 / 0.004328 (-0.001333) | 0.063100 / 0.004250 (0.058849) | 0.050063 / 0.037052 (0.013011) | 0.316744 / 0.258489 (0.058255) | 0.358001 / 0.293841 (0.064160) | 0.027503 / 0.128546 (-0.101043) | 0.007876 / 0.075646 (-0.067771) | 0.262211 / 0.419271 (-0.157060) | 0.045717 / 0.043533 (0.002184) | 0.317188 / 0.255139 (0.062049) | 0.342404 / 0.283200 (0.059205) | 0.020194 / 0.141683 (-0.121489) | 1.498672 / 1.452155 (0.046517) | 1.545479 / 1.492716 (0.052762) |

### 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) | 0.210985 / 0.018006 (0.192979) | 0.433592 / 0.000490 (0.433102) | 0.002864 / 0.000200 (0.002664) | 0.000079 / 0.000054 (0.000025) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.023463 / 0.037411 (-0.013948) | 0.073375 / 0.014526 (0.058850) | 0.083082 / 0.176557 (-0.093475) | 0.142583 / 0.737135 (-0.594552) | 0.084267 / 0.296338 (-0.212071) |

### 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) | 0.412890 / 0.215209 (0.197681) | 4.131421 / 2.077655 (2.053766) | 1.969164 / 1.504120 (0.465044) | 1.772379 / 1.541195 (0.231185) | 1.834154 / 1.468490 (0.365664) | 0.496290 / 4.584777 (-4.088487) | 3.056504 / 3.745712 (-0.689208) | 3.400962 / 5.269862 (-1.868900) | 2.120575 / 4.565676 (-2.445101) | 0.056932 / 0.424275 (-0.367343) | 0.006412 / 0.007607 (-0.001195) | 0.484521 / 0.226044 (0.258477) | 4.817474 / 2.268929 (2.548545) | 2.464075 / 55.444624 (-52.980549) | 2.085056 / 6.876477 (-4.791421) | 2.324516 / 2.142072 (0.182444) | 0.592013 / 4.805227 (-4.213214) | 0.132232 / 6.500664 (-6.368432) | 0.062825 / 0.075469 (-0.012645) |

### 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) | 1.228080 / 1.841788 (-0.613708) | 18.555385 / 8.074308 (10.481077) | 13.939565 / 10.191392 (3.748173) | 0.145979 / 0.680424 (-0.534445) | 0.016823 / 0.534201 (-0.517377) | 0.330569 / 0.579283 (-0.248714) | 0.358094 / 0.434364 (-0.076270) | 0.384642 / 0.540337 (-0.155696) | 0.518347 / 1.386936 (-0.868589) |

</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) | 0.006198 / 0.011353 (-0.005155) | 0.003670 / 0.011008 (-0.007338) | 0.062502 / 0.038508 (0.023994) | 0.064339 / 0.023109 (0.041229) | 0.428414 / 0.275898 (0.152516) | 0.463899 / 0.323480 (0.140420) | 0.005524 / 0.007986 (-0.002462) | 0.002915 / 0.004328 (-0.001413) | 0.062521 / 0.004250 (0.058270) | 0.051182 / 0.037052 (0.014130) | 0.431144 / 0.258489 (0.172655) | 0.469465 / 0.293841 (0.175624) | 0.027463 / 0.128546 (-0.101083) | 0.007974 / 0.075646 (-0.067673) | 0.068029 / 0.419271 (-0.351242) | 0.042123 / 0.043533 (-0.001409) | 0.428667 / 0.255139 (0.173528) | 0.455917 / 0.283200 (0.172717) | 0.023264 / 0.141683 (-0.118419) | 1.426986 / 1.452155 (-0.025168) | 1.500049 / 1.492716 (0.007332) |

### 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) | 0.207264 / 0.018006 (0.189258) | 0.440738 / 0.000490 (0.440248) | 0.000802 / 0.000200 (0.000602) | 0.000062 / 0.000054 (0.000008) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.026245 / 0.037411 (-0.011166) | 0.078749 / 0.014526 (0.064223) | 0.087873 / 0.176557 (-0.088684) | 0.141518 / 0.737135 (-0.595617) | 0.089811 / 0.296338 (-0.206527) |

### 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) | 0.418955 / 0.215209 (0.203746) | 4.177881 / 2.077655 (2.100226) | 2.162678 / 1.504120 (0.658558) | 1.998969 / 1.541195 (0.457775) | 2.066720 / 1.468490 (0.598230) | 0.496850 / 4.584777 (-4.087927) | 3.041179 / 3.745712 (-0.704534) | 4.126039 / 5.269862 (-1.143823) | 2.740507 / 4.565676 (-1.825169) | 0.058025 / 0.424275 (-0.366250) | 0.006846 / 0.007607 (-0.000761) | 0.493281 / 0.226044 (0.267237) | 4.930196 / 2.268929 (2.661268) | 2.685152 / 55.444624 (-52.759472) | 2.378247 / 6.876477 (-4.498230) | 2.469103 / 2.142072 (0.327031) | 0.585346 / 4.805227 (-4.219882) | 0.126099 / 6.500664 (-6.374565) | 0.062946 / 0.075469 (-0.012523) |

### 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) | 1.313892 / 1.841788 (-0.527896) | 19.177117 / 8.074308 (11.102809) | 14.081321 / 10.191392 (3.889929) | 0.133948 / 0.680424 (-0.546476) | 0.017128 / 0.534201 (-0.517073) | 0.332241 / 0.579283 (-0.247042) | 0.373218 / 0.434364 (-0.061145) | 0.395308 / 0.540337 (-0.145030) | 0.529883 / 1.386936 (-0.857053) |

</details>
</details>

![](https://cml.dev/watermark.png#16f7c7677942083436062b904b74643accb9bcac "CML watermark")