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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) | 0.007003 / 0.011353 (-0.004350) | 0.004854 / 0.011008 (-0.006154) | 0.096982 / 0.038508 (0.058474) | 0.033218 / 0.023109 (0.010109) | 0.314088 / 0.275898 (0.038190) | 0.351315 / 0.323480 (0.027835) | 0.005679 / 0.007986 (-0.002307) | 0.005404 / 0.004328 (0.001075) | 0.071773 / 0.004250 (0.067522) | 0.044593 / 0.037052 (0.007540) | 0.323643 / 0.258489 (0.065154) | 0.357172 / 0.293841 (0.063331) | 0.036782 / 0.128546 (-0.091764) | 0.012146 / 0.075646 (-0.063501) | 0.334874 / 0.419271 (-0.084397) | 0.051475 / 0.043533 (0.007942) | 0.305949 / 0.255139 (0.050810) | 0.339326 / 0.283200 (0.056126) | 0.101509 / 0.141683 (-0.040174) | 1.458254 / 1.452155 (0.006099) | 1.535252 / 1.492716 (0.042535) |

### 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) | 0.264837 / 0.018006 (0.246831) | 0.441444 / 0.000490 (0.440955) | 0.003331 / 0.000200 (0.003131) | 0.000084 / 0.000054 (0.000030) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.026529 / 0.037411 (-0.010882) | 0.105924 / 0.014526 (0.091398) | 0.117191 / 0.176557 (-0.059365) | 0.176606 / 0.737135 (-0.560529) | 0.123452 / 0.296338 (-0.172887) |

### 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) | 0.412351 / 0.215209 (0.197142) | 4.135468 / 2.077655 (2.057813) | 1.912820 / 1.504120 (0.408700) | 1.738993 / 1.541195 (0.197798) | 1.754228 / 1.468490 (0.285738) | 0.692239 / 4.584777 (-3.892538) | 3.765672 / 3.745712 (0.019959) | 2.081141 / 5.269862 (-3.188720) | 1.425153 / 4.565676 (-3.140523) | 0.085055 / 0.424275 (-0.339220) | 0.011918 / 0.007607 (0.004311) | 0.517573 / 0.226044 (0.291529) | 5.179809 / 2.268929 (2.910881) | 2.471620 / 55.444624 (-52.973005) | 2.140634 / 6.876477 (-4.735843) | 2.200150 / 2.142072 (0.058077) | 0.831662 / 4.805227 (-3.973566) | 0.168828 / 6.500664 (-6.331836) | 0.062755 / 0.075469 (-0.012714) |

### 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) | 1.196890 / 1.841788 (-0.644898) | 14.826423 / 8.074308 (6.752114) | 14.020782 / 10.191392 (3.829390) | 0.161275 / 0.680424 (-0.519149) | 0.017467 / 0.534201 (-0.516734) | 0.422278 / 0.579283 (-0.157005) | 0.424053 / 0.434364 (-0.010311) | 0.490768 / 0.540337 (-0.049570) | 0.584490 / 1.386936 (-0.802446) |

</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) | 0.007102 / 0.011353 (-0.004250) | 0.005145 / 0.011008 (-0.005863) | 0.073823 / 0.038508 (0.035315) | 0.032947 / 0.023109 (0.009838) | 0.336978 / 0.275898 (0.061080) | 0.368961 / 0.323480 (0.045481) | 0.006052 / 0.007986 (-0.001934) | 0.003970 / 0.004328 (-0.000358) | 0.072925 / 0.004250 (0.068674) | 0.044502 / 0.037052 (0.007450) | 0.340849 / 0.258489 (0.082360) | 0.381487 / 0.293841 (0.087646) | 0.037207 / 0.128546 (-0.091339) | 0.012095 / 0.075646 (-0.063551) | 0.085206 / 0.419271 (-0.334065) | 0.056236 / 0.043533 (0.012703) | 0.334048 / 0.255139 (0.078909) | 0.360442 / 0.283200 (0.077242) | 0.104402 / 0.141683 (-0.037281) | 1.446907 / 1.452155 (-0.005248) | 1.542430 / 1.492716 (0.049713) |

### 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) | 0.238720 / 0.018006 (0.220714) | 0.445857 / 0.000490 (0.445367) | 0.009280 / 0.000200 (0.009080) | 0.000150 / 0.000054 (0.000095) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.028414 / 0.037411 (-0.008998) | 0.110506 / 0.014526 (0.095981) | 0.124593 / 0.176557 (-0.051964) | 0.170951 / 0.737135 (-0.566184) | 0.128033 / 0.296338 (-0.168305) |

### 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) | 0.426206 / 0.215209 (0.210997) | 4.267289 / 2.077655 (2.189634) | 2.026880 / 1.504120 (0.522760) | 1.844052 / 1.541195 (0.302858) | 1.897697 / 1.468490 (0.429207) | 0.713545 / 4.584777 (-3.871232) | 3.815052 / 3.745712 (0.069339) | 3.217091 / 5.269862 (-2.052770) | 1.790546 / 4.565676 (-2.775130) | 0.087501 / 0.424275 (-0.336774) | 0.012136 / 0.007607 (0.004529) | 0.534495 / 0.226044 (0.308451) | 5.325913 / 2.268929 (3.056984) | 2.484309 / 55.444624 (-52.960315) | 2.149721 / 6.876477 (-4.726756) | 2.158764 / 2.142072 (0.016692) | 0.855273 / 4.805227 (-3.949954) | 0.170374 / 6.500664 (-6.330290) | 0.064053 / 0.075469 (-0.011416) |

### 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) | 1.253171 / 1.841788 (-0.588617) | 15.254562 / 8.074308 (7.180254) | 14.242119 / 10.191392 (4.050727) | 0.159298 / 0.680424 (-0.521126) | 0.017504 / 0.534201 (-0.516696) | 0.419710 / 0.579283 (-0.159574) | 0.417879 / 0.434364 (-0.016485) | 0.486328 / 0.540337 (-0.054009) | 0.578933 / 1.386936 (-0.808003) |

</details>
</details>

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2023-04-12T08:53:12Z
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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) | 0.008476 / 0.011353 (-0.002877) | 0.005745 / 0.011008 (-0.005263) | 0.115307 / 0.038508 (0.076799) | 0.039356 / 0.023109 (0.016247) | 0.367155 / 0.275898 (0.091257) | 0.422147 / 0.323480 (0.098667) | 0.006817 / 0.007986 (-0.001168) | 0.004652 / 0.004328 (0.000323) | 0.084045 / 0.004250 (0.079795) | 0.055483 / 0.037052 (0.018431) | 0.364249 / 0.258489 (0.105760) | 0.415975 / 0.293841 (0.122134) | 0.041322 / 0.128546 (-0.087224) | 0.014178 / 0.075646 (-0.061469) | 0.392658 / 0.419271 (-0.026614) | 0.060156 / 0.043533 (0.016623) | 0.373938 / 0.255139 (0.118799) | 0.397494 / 0.283200 (0.114294) | 0.113811 / 0.141683 (-0.027872) | 1.688581 / 1.452155 (0.236427) | 1.790374 / 1.492716 (0.297658) |

### 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) | 0.222203 / 0.018006 (0.204196) | 0.471109 / 0.000490 (0.470619) | 0.007071 / 0.000200 (0.006871) | 0.000156 / 0.000054 (0.000102) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.032112 / 0.037411 (-0.005299) | 0.118726 / 0.014526 (0.104200) | 0.134918 / 0.176557 (-0.041639) | 0.207766 / 0.737135 (-0.529369) | 0.139756 / 0.296338 (-0.156582) |

### 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) | 0.479858 / 0.215209 (0.264649) | 4.798428 / 2.077655 (2.720773) | 2.221573 / 1.504120 (0.717453) | 1.964956 / 1.541195 (0.423761) | 2.021763 / 1.468490 (0.553273) | 0.820401 / 4.584777 (-3.764376) | 4.533887 / 3.745712 (0.788175) | 4.121332 / 5.269862 (-1.148529) | 2.195807 / 4.565676 (-2.369869) | 0.103133 / 0.424275 (-0.321142) | 0.014620 / 0.007607 (0.007013) | 0.605012 / 0.226044 (0.378967) | 5.966623 / 2.268929 (3.697694) | 2.844118 / 55.444624 (-52.600506) | 2.463569 / 6.876477 (-4.412907) | 2.597177 / 2.142072 (0.455105) | 0.983201 / 4.805227 (-3.822026) | 0.199500 / 6.500664 (-6.301164) | 0.078387 / 0.075469 (0.002918) |

### 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) | 1.401083 / 1.841788 (-0.440705) | 17.258725 / 8.074308 (9.184417) | 16.825992 / 10.191392 (6.634600) | 0.216762 / 0.680424 (-0.463662) | 0.021135 / 0.534201 (-0.513066) | 0.513688 / 0.579283 (-0.065595) | 0.488892 / 0.434364 (0.054529) | 0.566745 / 0.540337 (0.026408) | 0.688958 / 1.386936 (-0.697978) |

</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) | 0.007948 / 0.011353 (-0.003405) | 0.005981 / 0.011008 (-0.005027) | 0.084474 / 0.038508 (0.045966) | 0.037952 / 0.023109 (0.014843) | 0.383359 / 0.275898 (0.107461) | 0.409324 / 0.323480 (0.085844) | 0.006641 / 0.007986 (-0.001344) | 0.004785 / 0.004328 (0.000456) | 0.083214 / 0.004250 (0.078964) | 0.053177 / 0.037052 (0.016125) | 0.393147 / 0.258489 (0.134658) | 0.438496 / 0.293841 (0.144655) | 0.042090 / 0.128546 (-0.086456) | 0.013373 / 0.075646 (-0.062273) | 0.097585 / 0.419271 (-0.321686) | 0.056359 / 0.043533 (0.012826) | 0.378113 / 0.255139 (0.122974) | 0.403874 / 0.283200 (0.120674) | 0.123503 / 0.141683 (-0.018180) | 1.639557 / 1.452155 (0.187403) | 1.759787 / 1.492716 (0.267071) |

### 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) | 0.242534 / 0.018006 (0.224528) | 0.459040 / 0.000490 (0.458550) | 0.000454 / 0.000200 (0.000254) | 0.000066 / 0.000054 (0.000011) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.031747 / 0.037411 (-0.005664) | 0.125823 / 0.014526 (0.111297) | 0.138985 / 0.176557 (-0.037571) | 0.194371 / 0.737135 (-0.542764) | 0.148905 / 0.296338 (-0.147433) |

### 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) | 0.508201 / 0.215209 (0.292992) | 5.007519 / 2.077655 (2.929865) | 2.412956 / 1.504120 (0.908836) | 2.143378 / 1.541195 (0.602183) | 2.192966 / 1.468490 (0.724476) | 0.828497 / 4.584777 (-3.756280) | 4.496457 / 3.745712 (0.750745) | 2.397546 / 5.269862 (-2.872315) | 1.522889 / 4.565676 (-3.042787) | 0.099904 / 0.424275 (-0.324371) | 0.014561 / 0.007607 (0.006954) | 0.627417 / 0.226044 (0.401373) | 6.296441 / 2.268929 (4.027512) | 2.962858 / 55.444624 (-52.481767) | 2.543083 / 6.876477 (-4.333394) | 2.711884 / 2.142072 (0.569811) | 0.997969 / 4.805227 (-3.807259) | 0.200283 / 6.500664 (-6.300382) | 0.075934 / 0.075469 (0.000465) |

### 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) | 1.541707 / 1.841788 (-0.300081) | 17.791559 / 8.074308 (9.717251) | 16.782877 / 10.191392 (6.591485) | 0.171954 / 0.680424 (-0.508470) | 0.020506 / 0.534201 (-0.513695) | 0.504189 / 0.579283 (-0.075094) | 0.501655 / 0.434364 (0.067291) | 0.583120 / 0.540337 (0.042782) | 0.694931 / 1.386936 (-0.692005) |

</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) | 0.007613 / 0.011353 (-0.003740) | 0.005057 / 0.011008 (-0.005951) | 0.099147 / 0.038508 (0.060639) | 0.035358 / 0.023109 (0.012249) | 0.303442 / 0.275898 (0.027544) | 0.336898 / 0.323480 (0.013418) | 0.006216 / 0.007986 (-0.001770) | 0.004085 / 0.004328 (-0.000244) | 0.074567 / 0.004250 (0.070317) | 0.050917 / 0.037052 (0.013865) | 0.301786 / 0.258489 (0.043297) | 0.341362 / 0.293841 (0.047521) | 0.037019 / 0.128546 (-0.091528) | 0.011977 / 0.075646 (-0.063669) | 0.334688 / 0.419271 (-0.084583) | 0.051326 / 0.043533 (0.007793) | 0.299878 / 0.255139 (0.044739) | 0.325571 / 0.283200 (0.042371) | 0.110744 / 0.141683 (-0.030939) | 1.480898 / 1.452155 (0.028743) | 1.566917 / 1.492716 (0.074201) |

### 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) | 0.253249 / 0.018006 (0.235242) | 0.558576 / 0.000490 (0.558086) | 0.003838 / 0.000200 (0.003638) | 0.000085 / 0.000054 (0.000030) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.028731 / 0.037411 (-0.008681) | 0.110643 / 0.014526 (0.096117) | 0.119560 / 0.176557 (-0.056996) | 0.178010 / 0.737135 (-0.559126) | 0.130286 / 0.296338 (-0.166053) |

### 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) | 0.400190 / 0.215209 (0.184981) | 3.999326 / 2.077655 (1.921672) | 1.797332 / 1.504120 (0.293212) | 1.610808 / 1.541195 (0.069613) | 1.679949 / 1.468490 (0.211459) | 0.696539 / 4.584777 (-3.888238) | 3.784766 / 3.745712 (0.039054) | 2.205008 / 5.269862 (-3.064854) | 1.501697 / 4.565676 (-3.063979) | 0.085553 / 0.424275 (-0.338723) | 0.012223 / 0.007607 (0.004616) | 0.494858 / 0.226044 (0.268813) | 4.968535 / 2.268929 (2.699606) | 2.258759 / 55.444624 (-53.185865) | 1.926236 / 6.876477 (-4.950241) | 2.072155 / 2.142072 (-0.069917) | 0.838354 / 4.805227 (-3.966873) | 0.168810 / 6.500664 (-6.331854) | 0.064347 / 0.075469 (-0.011122) |

### 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) | 1.166696 / 1.841788 (-0.675091) | 14.721287 / 8.074308 (6.646979) | 14.319272 / 10.191392 (4.127880) | 0.144534 / 0.680424 (-0.535890) | 0.017502 / 0.534201 (-0.516699) | 0.422682 / 0.579283 (-0.156601) | 0.424426 / 0.434364 (-0.009938) | 0.493561 / 0.540337 (-0.046777) | 0.586765 / 1.386936 (-0.800171) |

</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) | 0.007764 / 0.011353 (-0.003589) | 0.005516 / 0.011008 (-0.005492) | 0.074745 / 0.038508 (0.036237) | 0.034364 / 0.023109 (0.011255) | 0.344318 / 0.275898 (0.068420) | 0.374779 / 0.323480 (0.051299) | 0.005904 / 0.007986 (-0.002082) | 0.004323 / 0.004328 (-0.000005) | 0.073191 / 0.004250 (0.068941) | 0.051549 / 0.037052 (0.014496) | 0.341792 / 0.258489 (0.083303) | 0.387576 / 0.293841 (0.093735) | 0.037483 / 0.128546 (-0.091063) | 0.012410 / 0.075646 (-0.063237) | 0.086480 / 0.419271 (-0.332791) | 0.050035 / 0.043533 (0.006502) | 0.335475 / 0.255139 (0.080336) | 0.361436 / 0.283200 (0.078236) | 0.106890 / 0.141683 (-0.034792) | 1.464032 / 1.452155 (0.011877) | 1.563490 / 1.492716 (0.070774) |

### 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) | 0.268765 / 0.018006 (0.250758) | 0.563811 / 0.000490 (0.563321) | 0.004904 / 0.000200 (0.004704) | 0.000096 / 0.000054 (0.000041) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.029885 / 0.037411 (-0.007526) | 0.113885 / 0.014526 (0.099359) | 0.124283 / 0.176557 (-0.052274) | 0.173619 / 0.737135 (-0.563517) | 0.131781 / 0.296338 (-0.164557) |

### 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) | 0.420296 / 0.215209 (0.205087) | 4.167656 / 2.077655 (2.090001) | 1.982356 / 1.504120 (0.478237) | 1.792181 / 1.541195 (0.250986) | 1.871459 / 1.468490 (0.402969) | 0.707066 / 4.584777 (-3.877711) | 3.835922 / 3.745712 (0.090210) | 3.506796 / 5.269862 (-1.763066) | 1.857172 / 4.565676 (-2.708505) | 0.086219 / 0.424275 (-0.338056) | 0.012404 / 0.007607 (0.004796) | 0.512393 / 0.226044 (0.286348) | 5.111623 / 2.268929 (2.842695) | 2.493523 / 55.444624 (-52.951101) | 2.188220 / 6.876477 (-4.688257) | 2.319096 / 2.142072 (0.177024) | 0.844084 / 4.805227 (-3.961144) | 0.171130 / 6.500664 (-6.329534) | 0.065913 / 0.075469 (-0.009556) |

### 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) | 1.284768 / 1.841788 (-0.557020) | 15.334610 / 8.074308 (7.260301) | 14.724436 / 10.191392 (4.533044) | 0.188425 / 0.680424 (-0.491999) | 0.017984 / 0.534201 (-0.516217) | 0.428150 / 0.579283 (-0.151133) | 0.429013 / 0.434364 (-0.005351) | 0.500818 / 0.540337 (-0.039519) | 0.592879 / 1.386936 (-0.794057) |

</details>
</details>

![](https://cml.dev/watermark.png#ee68da958c2fab3a26d9f0efb1e207ecbcf7ce15 "CML watermark")

2023-04-13T09:47:43Z
https://github.com/huggingface/datasets/pull/5740#issuecomment-1506672810
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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) | 0.006870 / 0.011353 (-0.004483) | 0.004702 / 0.011008 (-0.006306) | 0.099258 / 0.038508 (0.060750) | 0.029008 / 0.023109 (0.005899) | 0.330599 / 0.275898 (0.054701) | 0.361163 / 0.323480 (0.037683) | 0.005020 / 0.007986 (-0.002965) | 0.003474 / 0.004328 (-0.000855) | 0.075902 / 0.004250 (0.071651) | 0.037462 / 0.037052 (0.000410) | 0.336213 / 0.258489 (0.077724) | 0.370645 / 0.293841 (0.076804) | 0.032435 / 0.128546 (-0.096111) | 0.011686 / 0.075646 (-0.063960) | 0.326040 / 0.419271 (-0.093232) | 0.043750 / 0.043533 (0.000217) | 0.332629 / 0.255139 (0.077490) | 0.353302 / 0.283200 (0.070102) | 0.090421 / 0.141683 (-0.051262) | 1.470097 / 1.452155 (0.017942) | 1.544908 / 1.492716 (0.052191) |

### 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) | 0.213418 / 0.018006 (0.195411) | 0.434808 / 0.000490 (0.434319) | 0.005949 / 0.000200 (0.005749) | 0.000072 / 0.000054 (0.000018) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.023085 / 0.037411 (-0.014327) | 0.098222 / 0.014526 (0.083696) | 0.104543 / 0.176557 (-0.072013) | 0.165423 / 0.737135 (-0.571713) | 0.108732 / 0.296338 (-0.187606) |

### 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) | 0.433933 / 0.215209 (0.218724) | 4.334358 / 2.077655 (2.256704) | 2.013984 / 1.504120 (0.509864) | 1.862981 / 1.541195 (0.321787) | 1.873936 / 1.468490 (0.405446) | 0.699857 / 4.584777 (-3.884920) | 3.417815 / 3.745712 (-0.327897) | 1.946403 / 5.269862 (-3.323459) | 1.308683 / 4.565676 (-3.256994) | 0.083297 / 0.424275 (-0.340978) | 0.012610 / 0.007607 (0.005003) | 0.540877 / 0.226044 (0.314832) | 5.408293 / 2.268929 (3.139365) | 2.529574 / 55.444624 (-52.915050) | 2.201047 / 6.876477 (-4.675429) | 2.392966 / 2.142072 (0.250894) | 0.812719 / 4.805227 (-3.992509) | 0.154013 / 6.500664 (-6.346651) | 0.067614 / 0.075469 (-0.007855) |

### 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) | 1.228150 / 1.841788 (-0.613638) | 14.037090 / 8.074308 (5.962782) | 14.259416 / 10.191392 (4.068024) | 0.155554 / 0.680424 (-0.524870) | 0.016521 / 0.534201 (-0.517680) | 0.379615 / 0.579283 (-0.199668) | 0.421352 / 0.434364 (-0.013012) | 0.446512 / 0.540337 (-0.093825) | 0.531802 / 1.386936 (-0.855134) |

</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) | 0.006629 / 0.011353 (-0.004724) | 0.004432 / 0.011008 (-0.006577) | 0.076662 / 0.038508 (0.038154) | 0.027674 / 0.023109 (0.004565) | 0.341667 / 0.275898 (0.065769) | 0.376493 / 0.323480 (0.053014) | 0.005076 / 0.007986 (-0.002910) | 0.004655 / 0.004328 (0.000326) | 0.075698 / 0.004250 (0.071448) | 0.036905 / 0.037052 (-0.000147) | 0.342394 / 0.258489 (0.083905) | 0.383330 / 0.293841 (0.089489) | 0.031729 / 0.128546 (-0.096817) | 0.011582 / 0.075646 (-0.064064) | 0.085721 / 0.419271 (-0.333551) | 0.042012 / 0.043533 (-0.001521) | 0.342063 / 0.255139 (0.086924) | 0.367335 / 0.283200 (0.084136) | 0.089641 / 0.141683 (-0.052042) | 1.520353 / 1.452155 (0.068198) | 1.643653 / 1.492716 (0.150937) |

### 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) | 0.178995 / 0.018006 (0.160989) | 0.436544 / 0.000490 (0.436055) | 0.002311 / 0.000200 (0.002111) | 0.000081 / 0.000054 (0.000026) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.025386 / 0.037411 (-0.012026) | 0.099717 / 0.014526 (0.085192) | 0.110809 / 0.176557 (-0.065747) | 0.162931 / 0.737135 (-0.574204) | 0.110430 / 0.296338 (-0.185909) |

### 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) | 0.438592 / 0.215209 (0.223382) | 4.372560 / 2.077655 (2.294905) | 2.069686 / 1.504120 (0.565567) | 1.860576 / 1.541195 (0.319382) | 1.898161 / 1.468490 (0.429671) | 0.698353 / 4.584777 (-3.886424) | 3.462440 / 3.745712 (-0.283272) | 1.868602 / 5.269862 (-3.401260) | 1.160498 / 4.565676 (-3.405179) | 0.082869 / 0.424275 (-0.341406) | 0.012690 / 0.007607 (0.005083) | 0.533278 / 0.226044 (0.307233) | 5.386214 / 2.268929 (3.117285) | 2.519243 / 55.444624 (-52.925382) | 2.171109 / 6.876477 (-4.705368) | 2.272617 / 2.142072 (0.130544) | 0.805843 / 4.805227 (-3.999384) | 0.152275 / 6.500664 (-6.348389) | 0.068038 / 0.075469 (-0.007431) |

### 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) | 1.291967 / 1.841788 (-0.549821) | 14.386474 / 8.074308 (6.312166) | 14.180693 / 10.191392 (3.989301) | 0.131714 / 0.680424 (-0.548710) | 0.016596 / 0.534201 (-0.517605) | 0.384293 / 0.579283 (-0.194990) | 0.404051 / 0.434364 (-0.030313) | 0.452167 / 0.540337 (-0.088170) | 0.542718 / 1.386936 (-0.844218) |

</details>
</details>

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2023-04-13T11:01:23Z
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public
This PR fixes the fixtures of our CI mock filesystems.

Before, we had to pass `clobber=True` to `fsspec.register_implementation` to overwrite the still present previously added "mock" filesystem. That meant that the mock filesystem fixture was not working properly, because the previously added "mock" filesystem, should have been deleted by the fixture.

This PR fixes the mock filesystem fixtures, so that the "mock" filesystem is properly deleted from the inner `fsspec` registry.

Tests were added to check the correct behavior of the mock filesystem fixtures.

Related to:
- #5733