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) | 0.006517 / 0.011353 (-0.004836) | 0.004217 / 0.011008 (-0.006792) | 0.083162 / 0.038508 (0.044654) | 0.074476 / 0.023109 (0.051367) | 0.321193 / 0.275898 (0.045295) | 0.358348 / 0.323480 (0.034868) | 0.005531 / 0.007986 (-0.002455) | 0.003621 / 0.004328 (-0.000707) | 0.063819 / 0.004250 (0.059568) | 0.056524 / 0.037052 (0.019471) | 0.322145 / 0.258489 (0.063656) | 0.371415 / 0.293841 (0.077574) | 0.030612 / 0.128546 (-0.097934) | 0.008907 / 0.075646 (-0.066739) | 0.289451 / 0.419271 (-0.129821) | 0.051959 / 0.043533 (0.008426) | 0.317729 / 0.255139 (0.062590) | 0.339750 / 0.283200 (0.056550) | 0.022430 / 0.141683 (-0.119253) | 1.487661 / 1.452155 (0.035506) | 1.554916 / 1.492716 (0.062199) |

### 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) | 0.296673 / 0.018006 (0.278667) | 0.599183 / 0.000490 (0.598694) | 0.002524 / 0.000200 (0.002324) | 0.000076 / 0.000054 (0.000021) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.027898 / 0.037411 (-0.009514) | 0.080870 / 0.014526 (0.066344) | 0.094894 / 0.176557 (-0.081662) | 0.152350 / 0.737135 (-0.584785) | 0.095765 / 0.296338 (-0.200573) |

### 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) | 0.415442 / 0.215209 (0.200233) | 4.161155 / 2.077655 (2.083500) | 2.117061 / 1.504120 (0.612941) | 1.937846 / 1.541195 (0.396651) | 1.979635 / 1.468490 (0.511145) | 0.488381 / 4.584777 (-4.096396) | 3.509836 / 3.745712 (-0.235876) | 3.833074 / 5.269862 (-1.436788) | 2.307536 / 4.565676 (-2.258141) | 0.057059 / 0.424275 (-0.367216) | 0.007366 / 0.007607 (-0.000241) | 0.487752 / 0.226044 (0.261708) | 4.869406 / 2.268929 (2.600478) | 2.594775 / 55.444624 (-52.849849) | 2.191712 / 6.876477 (-4.684765) | 2.413220 / 2.142072 (0.271147) | 0.584513 / 4.805227 (-4.220714) | 0.132162 / 6.500664 (-6.368502) | 0.061059 / 0.075469 (-0.014410) |

### 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) | 1.245178 / 1.841788 (-0.596610) | 20.624563 / 8.074308 (12.550255) | 14.675545 / 10.191392 (4.484153) | 0.165838 / 0.680424 (-0.514586) | 0.018700 / 0.534201 (-0.515501) | 0.392475 / 0.579283 (-0.186808) | 0.399884 / 0.434364 (-0.034480) | 0.457478 / 0.540337 (-0.082859) | 0.624553 / 1.386936 (-0.762383) |

</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) | 0.006716 / 0.011353 (-0.004637) | 0.004308 / 0.011008 (-0.006700) | 0.064495 / 0.038508 (0.025987) | 0.083194 / 0.023109 (0.060085) | 0.371994 / 0.275898 (0.096096) | 0.433045 / 0.323480 (0.109566) | 0.005535 / 0.007986 (-0.002450) | 0.003469 / 0.004328 (-0.000859) | 0.064342 / 0.004250 (0.060092) | 0.059362 / 0.037052 (0.022309) | 0.393819 / 0.258489 (0.135330) | 0.442591 / 0.293841 (0.148750) | 0.031594 / 0.128546 (-0.096952) | 0.008943 / 0.075646 (-0.066703) | 0.070689 / 0.419271 (-0.348582) | 0.049219 / 0.043533 (0.005686) | 0.361568 / 0.255139 (0.106429) | 0.417085 / 0.283200 (0.133886) | 0.025112 / 0.141683 (-0.116571) | 1.497204 / 1.452155 (0.045049) | 1.552781 / 1.492716 (0.060064) |

### 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) | 0.325254 / 0.018006 (0.307248) | 0.528399 / 0.000490 (0.527909) | 0.007429 / 0.000200 (0.007229) | 0.000101 / 0.000054 (0.000047) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.029908 / 0.037411 (-0.007504) | 0.087114 / 0.014526 (0.072588) | 0.103366 / 0.176557 (-0.073191) | 0.155145 / 0.737135 (-0.581990) | 0.103458 / 0.296338 (-0.192880) |

### 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) | 0.409432 / 0.215209 (0.194223) | 4.093327 / 2.077655 (2.015673) | 2.154115 / 1.504120 (0.649995) | 1.953492 / 1.541195 (0.412297) | 2.021532 / 1.468490 (0.553042) | 0.478928 / 4.584777 (-4.105849) | 3.515287 / 3.745712 (-0.230426) | 4.976239 / 5.269862 (-0.293623) | 2.832803 / 4.565676 (-1.732873) | 0.057239 / 0.424275 (-0.367036) | 0.007718 / 0.007607 (0.000111) | 0.484102 / 0.226044 (0.258057) | 4.833020 / 2.268929 (2.564092) | 2.564550 / 55.444624 (-52.880074) | 2.268969 / 6.876477 (-4.607508) | 2.513308 / 2.142072 (0.371235) | 0.582822 / 4.805227 (-4.222406) | 0.133989 / 6.500664 (-6.366675) | 0.062078 / 0.075469 (-0.013391) |

### 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) | 1.393766 / 1.841788 (-0.448021) | 20.224546 / 8.074308 (12.150238) | 14.359438 / 10.191392 (4.168046) | 0.166358 / 0.680424 (-0.514066) | 0.018840 / 0.534201 (-0.515361) | 0.393206 / 0.579283 (-0.186077) | 0.404220 / 0.434364 (-0.030144) | 0.462346 / 0.540337 (-0.077992) | 0.603078 / 1.386936 (-0.783858) |

</details>
</details>

![](https://cml.dev/watermark.png#53e8007baeff133aaad8cbb366196be18a5e57fd "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) | 0.006835 / 0.011353 (-0.004518) | 0.004530 / 0.011008 (-0.006478) | 0.087506 / 0.038508 (0.048997) | 0.088289 / 0.023109 (0.065180) | 0.351575 / 0.275898 (0.075677) | 0.391873 / 0.323480 (0.068393) | 0.005627 / 0.007986 (-0.002359) | 0.003735 / 0.004328 (-0.000594) | 0.065747 / 0.004250 (0.061497) | 0.058779 / 0.037052 (0.021726) | 0.358076 / 0.258489 (0.099587) | 0.408466 / 0.293841 (0.114626) | 0.031369 / 0.128546 (-0.097178) | 0.008807 / 0.075646 (-0.066839) | 0.293253 / 0.419271 (-0.126019) | 0.052950 / 0.043533 (0.009417) | 0.350411 / 0.255139 (0.095272) | 0.384827 / 0.283200 (0.101627) | 0.026219 / 0.141683 (-0.115464) | 1.464290 / 1.452155 (0.012136) | 1.549688 / 1.492716 (0.056972) |

### 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) | 0.270354 / 0.018006 (0.252348) | 0.593436 / 0.000490 (0.592946) | 0.003872 / 0.000200 (0.003673) | 0.000091 / 0.000054 (0.000036) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.031625 / 0.037411 (-0.005787) | 0.092599 / 0.014526 (0.078073) | 0.104619 / 0.176557 (-0.071938) | 0.163183 / 0.737135 (-0.573952) | 0.103245 / 0.296338 (-0.193094) |

### 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) | 0.390213 / 0.215209 (0.175004) | 3.894519 / 2.077655 (1.816864) | 1.905739 / 1.504120 (0.401619) | 1.728873 / 1.541195 (0.187678) | 1.838692 / 1.468490 (0.370202) | 0.484730 / 4.584777 (-4.100047) | 3.706749 / 3.745712 (-0.038963) | 5.572311 / 5.269862 (0.302449) | 3.389949 / 4.565676 (-1.175727) | 0.057315 / 0.424275 (-0.366960) | 0.007475 / 0.007607 (-0.000132) | 0.464690 / 0.226044 (0.238645) | 4.622242 / 2.268929 (2.353314) | 2.380957 / 55.444624 (-53.063667) | 2.038225 / 6.876477 (-4.838251) | 2.358881 / 2.142072 (0.216809) | 0.606358 / 4.805227 (-4.198869) | 0.133584 / 6.500664 (-6.367080) | 0.061894 / 0.075469 (-0.013575) |

### 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) | 1.259575 / 1.841788 (-0.582213) | 20.915216 / 8.074308 (12.840908) | 14.971952 / 10.191392 (4.780560) | 0.160206 / 0.680424 (-0.520218) | 0.018675 / 0.534201 (-0.515526) | 0.396821 / 0.579283 (-0.182462) | 0.430982 / 0.434364 (-0.003382) | 0.452895 / 0.540337 (-0.087443) | 0.647869 / 1.386936 (-0.739067) |

</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) | 0.007194 / 0.011353 (-0.004158) | 0.004340 / 0.011008 (-0.006669) | 0.065125 / 0.038508 (0.026617) | 0.096243 / 0.023109 (0.073134) | 0.374361 / 0.275898 (0.098463) | 0.411863 / 0.323480 (0.088383) | 0.005813 / 0.007986 (-0.002172) | 0.003615 / 0.004328 (-0.000713) | 0.064953 / 0.004250 (0.060703) | 0.063171 / 0.037052 (0.026119) | 0.376238 / 0.258489 (0.117749) | 0.415826 / 0.293841 (0.121985) | 0.031926 / 0.128546 (-0.096620) | 0.008821 / 0.075646 (-0.066825) | 0.072150 / 0.419271 (-0.347122) | 0.049484 / 0.043533 (0.005951) | 0.369691 / 0.255139 (0.114552) | 0.390669 / 0.283200 (0.107470) | 0.025732 / 0.141683 (-0.115950) | 1.493833 / 1.452155 (0.041679) | 1.601786 / 1.492716 (0.109070) |

### 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) | 0.284279 / 0.018006 (0.266272) | 0.585909 / 0.000490 (0.585419) | 0.000411 / 0.000200 (0.000211) | 0.000057 / 0.000054 (0.000002) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.033642 / 0.037411 (-0.003769) | 0.095328 / 0.014526 (0.080802) | 0.105810 / 0.176557 (-0.070746) | 0.159779 / 0.737135 (-0.577357) | 0.108938 / 0.296338 (-0.187400) |

### 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) | 0.408112 / 0.215209 (0.192902) | 4.067035 / 2.077655 (1.989380) | 2.114504 / 1.504120 (0.610384) | 1.944027 / 1.541195 (0.402832) | 2.066117 / 1.468490 (0.597627) | 0.486441 / 4.584777 (-4.098336) | 3.622659 / 3.745712 (-0.123053) | 3.399310 / 5.269862 (-1.870552) | 2.183151 / 4.565676 (-2.382525) | 0.057490 / 0.424275 (-0.366785) | 0.007955 / 0.007607 (0.000347) | 0.490221 / 0.226044 (0.264177) | 4.887301 / 2.268929 (2.618373) | 2.679806 / 55.444624 (-52.764819) | 2.258992 / 6.876477 (-4.617484) | 2.592493 / 2.142072 (0.450420) | 0.606515 / 4.805227 (-4.198712) | 0.135645 / 6.500664 (-6.365019) | 0.063956 / 0.075469 (-0.011513) |

### 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) | 1.331304 / 1.841788 (-0.510483) | 21.458611 / 8.074308 (13.384303) | 14.898964 / 10.191392 (4.707572) | 0.172110 / 0.680424 (-0.508314) | 0.018791 / 0.534201 (-0.515409) | 0.395944 / 0.579283 (-0.183339) | 0.424526 / 0.434364 (-0.009838) | 0.462517 / 0.540337 (-0.077821) | 0.610139 / 1.386936 (-0.776797) |

</details>
</details>

![](https://cml.dev/watermark.png#09492ba523518289a84175ddb7ab3bc555e742ee "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) | 0.005957 / 0.011353 (-0.005396) | 0.003581 / 0.011008 (-0.007427) | 0.079624 / 0.038508 (0.041116) | 0.058004 / 0.023109 (0.034895) | 0.309345 / 0.275898 (0.033447) | 0.346653 / 0.323480 (0.023173) | 0.005420 / 0.007986 (-0.002566) | 0.002906 / 0.004328 (-0.001423) | 0.061970 / 0.004250 (0.057720) | 0.047627 / 0.037052 (0.010575) | 0.314096 / 0.258489 (0.055607) | 0.361368 / 0.293841 (0.067527) | 0.027211 / 0.128546 (-0.101335) | 0.007853 / 0.075646 (-0.067793) | 0.260202 / 0.419271 (-0.159070) | 0.045308 / 0.043533 (0.001775) | 0.312150 / 0.255139 (0.057011) | 0.341085 / 0.283200 (0.057886) | 0.021302 / 0.141683 (-0.120381) | 1.430315 / 1.452155 (-0.021840) | 1.608989 / 1.492716 (0.116273) |

### 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) | 0.185289 / 0.018006 (0.167283) | 0.423318 / 0.000490 (0.422828) | 0.005741 / 0.000200 (0.005541) | 0.000070 / 0.000054 (0.000015) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.023777 / 0.037411 (-0.013634) | 0.071937 / 0.014526 (0.057412) | 0.079406 / 0.176557 (-0.097151) | 0.143815 / 0.737135 (-0.593320) | 0.081648 / 0.296338 (-0.214690) |

### 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) | 0.431514 / 0.215209 (0.216305) | 4.314471 / 2.077655 (2.236817) | 2.305167 / 1.504120 (0.801047) | 2.137894 / 1.541195 (0.596699) | 2.161034 / 1.468490 (0.692544) | 0.511701 / 4.584777 (-4.073076) | 3.098213 / 3.745712 (-0.647499) | 4.086837 / 5.269862 (-1.183024) | 2.517184 / 4.565676 (-2.048492) | 0.058272 / 0.424275 (-0.366003) | 0.006415 / 0.007607 (-0.001192) | 0.504792 / 0.226044 (0.278747) | 5.046758 / 2.268929 (2.777829) | 2.752049 / 55.444624 (-52.692576) | 2.407707 / 6.876477 (-4.468770) | 2.532162 / 2.142072 (0.390090) | 0.597562 / 4.805227 (-4.207666) | 0.125935 / 6.500664 (-6.374729) | 0.060837 / 0.075469 (-0.014632) |

### 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) | 1.257048 / 1.841788 (-0.584740) | 17.877849 / 8.074308 (9.803541) | 13.904805 / 10.191392 (3.713413) | 0.131647 / 0.680424 (-0.548776) | 0.016975 / 0.534201 (-0.517226) | 0.329651 / 0.579283 (-0.249633) | 0.354358 / 0.434364 (-0.080006) | 0.377545 / 0.540337 (-0.162792) | 0.545593 / 1.386936 (-0.841343) |

</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) | 0.005839 / 0.011353 (-0.005514) | 0.003580 / 0.011008 (-0.007428) | 0.062204 / 0.038508 (0.023696) | 0.057943 / 0.023109 (0.034834) | 0.400165 / 0.275898 (0.124267) | 0.427911 / 0.323480 (0.104431) | 0.004412 / 0.007986 (-0.003574) | 0.002794 / 0.004328 (-0.001534) | 0.062933 / 0.004250 (0.058683) | 0.046243 / 0.037052 (0.009191) | 0.413640 / 0.258489 (0.155151) | 0.418592 / 0.293841 (0.124751) | 0.027020 / 0.128546 (-0.101526) | 0.007927 / 0.075646 (-0.067720) | 0.067581 / 0.419271 (-0.351691) | 0.041927 / 0.043533 (-0.001606) | 0.381863 / 0.255139 (0.126724) | 0.415711 / 0.283200 (0.132511) | 0.019827 / 0.141683 (-0.121856) | 1.464049 / 1.452155 (0.011894) | 1.528387 / 1.492716 (0.035671) |

### 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) | 0.224999 / 0.018006 (0.206993) | 0.419167 / 0.000490 (0.418678) | 0.000363 / 0.000200 (0.000163) | 0.000054 / 0.000054 (-0.000001) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.024827 / 0.037411 (-0.012585) | 0.077134 / 0.014526 (0.062608) | 0.085142 / 0.176557 (-0.091414) | 0.137400 / 0.737135 (-0.599735) | 0.086434 / 0.296338 (-0.209905) |

### 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) | 0.452716 / 0.215209 (0.237507) | 4.530610 / 2.077655 (2.452955) | 2.467309 / 1.504120 (0.963189) | 2.300441 / 1.541195 (0.759246) | 2.323475 / 1.468490 (0.854985) | 0.501847 / 4.584777 (-4.082930) | 3.079432 / 3.745712 (-0.666280) | 2.793107 / 5.269862 (-2.476755) | 1.835010 / 4.565676 (-2.730666) | 0.057698 / 0.424275 (-0.366577) | 0.006756 / 0.007607 (-0.000851) | 0.529062 / 0.226044 (0.303017) | 5.287822 / 2.268929 (3.018894) | 2.908411 / 55.444624 (-52.536214) | 2.571627 / 6.876477 (-4.304850) | 2.691188 / 2.142072 (0.549116) | 0.592289 / 4.805227 (-4.212938) | 0.126091 / 6.500664 (-6.374573) | 0.062312 / 0.075469 (-0.013157) |

### 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) | 1.328854 / 1.841788 (-0.512933) | 18.185628 / 8.074308 (10.111320) | 13.858781 / 10.191392 (3.667389) | 0.142421 / 0.680424 (-0.538003) | 0.016535 / 0.534201 (-0.517666) | 0.330839 / 0.579283 (-0.248444) | 0.346559 / 0.434364 (-0.087805) | 0.389153 / 0.540337 (-0.151185) | 0.516897 / 1.386936 (-0.870039) |

</details>
</details>

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