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Posted to github@datafusion.apache.org by "rluvaton (via GitHub)" <gi...@apache.org> on 2025/12/20 22:43:54 UTC
[PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
rluvaton opened a new pull request, #19431:
URL: https://github.com/apache/datafusion/pull/19431
## Which issue does this PR close?
N/A
## Rationale for this change
make `range` and `generate_series` faster
## What changes are included in this PR?
manually implement specialized implementation for Int64 `range` and `generate_series`
## Are these changes tested?
Existing tests + added more tests for edge cases
## Are there any user-facing changes?
Yes, added to public trait `SeriesValue` a function called `generate_array_for_series` with default implementation to avoid breaking changes
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "rluvaton (via GitHub)" <gi...@apache.org>.
rluvaton commented on PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#issuecomment-3678178987
run benchmark range_and_generate_series
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb commented on code in PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#discussion_r2651085722
##########
datafusion/sqllogictest/test_files/table_functions.slt:
##########
@@ -510,6 +510,277 @@ SELECT c, f.* FROM json_table, LATERAL generate_series(1,2) f;
2 1
2 2
+# To test edge cases related to batch size
+statement ok
+set datafusion.execution.batch_size = 10;
+
+# range equal batch size
+query I
+SELECT * FROM range(10)
+----
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+
+# generate_series equal batch size (including end)
+query I
+SELECT * FROM generate_series(9)
+----
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+
+# range equal batch size * 2
+query I
+SELECT * FROM range(20)
+----
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+
+# generate_series equal batch size * 2 (including end)
+query I
+SELECT * FROM generate_series(19)
+----
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+
+# range equal batch size with starting value
+query I
+SELECT * FROM range(1, 11)
+----
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+
+# generate_series equal batch size with starting value (including end)
+query I
+SELECT * FROM generate_series(1, 10)
+----
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+
+# range equal batch size * 2 with starting value
+query I
+SELECT * FROM range(1, 21)
+----
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+
+# generate_series equal batch size * 2 with starting value (including end)
+query I
+SELECT * FROM generate_series(1, 20)
+----
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+
+# range equal batch size with starting value and step
+query I
+SELECT count(*) FROM range(1, 21, 2)
+----
+10
+
+# range equal batch size with starting value and step
+query I
+SELECT * FROM range(1, 21, 2)
+----
+1
+3
+5
+7
+9
+11
+13
+15
+17
+19
+
+# generate_series equal batch size with starting value and step (including end)
+query I
+SELECT count(*) FROM generate_series(1, 20, 2)
+----
+10
+
+# generate_series equal batch size with starting value and step (including end)
+query I
+SELECT * FROM generate_series(1, 20, 2)
+----
+1
+3
+5
+7
+9
+11
+13
+15
+17
+19
+
+# range equal batch size * 2 with starting value and step
+query I
+SELECT count(*) FROM range(1, 40, 2)
+----
+20
+
+# range equal batch size * 2 with starting value and step
+query I
+SELECT * FROM range(1, 40, 2)
+----
+1
+3
+5
+7
+9
+11
+13
+15
+17
+19
+21
+23
+25
+27
+29
+31
+33
+35
+37
+39
+
+# generate_series equal batch size * 2 with starting value and step (including end)
+query I
+SELECT count(*) FROM generate_series(1, 39, 2)
+----
+20
+
+# generate_series equal batch size * 2 with starting value and step (including end)
+query I
+SELECT * FROM generate_series(1, 39, 2)
Review Comment:
should we also add a test for a starting value other than 1? Perhaps 100 and -100?
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "alamb-ghbot (via GitHub)" <gi...@apache.org>.
alamb-ghbot commented on PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#issuecomment-3696745321
🤖 `./gh_compare_branch_bench.sh` [compare_branch_bench.sh](https://github.com/alamb/datafusion-benchmarking/blob/main/scripts/compare_branch_bench.sh) Running
Linux aal-dev 6.14.0-1018-gcp #19~24.04.1-Ubuntu SMP Wed Sep 24 23:23:09 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
Comparing improve-range-and-generate-series-for-int-64 (df3c1b91a1eda6774db51fb5e1eca0e1c6454bdb) to 83ed19235b700a2bd41283301cfd344cb5b565bc [diff](https://github.com/apache/datafusion/compare/83ed19235b700a2bd41283301cfd344cb5b565bc..df3c1b91a1eda6774db51fb5e1eca0e1c6454bdb)
BENCH_NAME=range_and_generate_series
BENCH_COMMAND=cargo bench --features=parquet --bench range_and_generate_series
BENCH_FILTER=
BENCH_BRANCH_NAME=improve-range-and-generate-series-for-int-64
Results will be posted here when complete
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "pepijnve (via GitHub)" <gi...@apache.org>.
pepijnve commented on code in PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#discussion_r2637804725
##########
datafusion/functions-table/src/generate_series.rs:
##########
@@ -109,6 +133,59 @@ impl SeriesValue for i64 {
fn display_value(&self) -> String {
self.to_string()
}
+
+ fn generate_array_for_series(
+ series_state: &mut GenericSeriesState<Self>,
+ ) -> Result<ArrayRef> {
+ let array: Int64Array = if series_state.step > 0 {
+ if series_state.include_end {
+ Int64Array::from_iter_values(
+ (series_state.current..=series_state.end)
+ .step_by(series_state.step as usize)
+ .take(series_state.batch_size),
+ )
+ } else {
+ Int64Array::from_iter_values(
+ (series_state.current..series_state.end)
+ .step_by(series_state.step as usize)
+ .take(series_state.batch_size),
+ )
+ }
+ } else {
+ // step < 0
+ let cur = series_state.current as i128;
Review Comment:
Can the same effect be achieved using a reverse iterator like:
```
(series_state.end..=series_state.current).rev()
```
Depending on whether end is exclusive or not, you may have to offset it by one.
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "pepijnve (via GitHub)" <gi...@apache.org>.
pepijnve commented on code in PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#discussion_r2637894371
##########
datafusion/functions-table/src/generate_series.rs:
##########
@@ -109,6 +133,59 @@ impl SeriesValue for i64 {
fn display_value(&self) -> String {
self.to_string()
}
+
+ fn generate_array_for_series(
+ series_state: &mut GenericSeriesState<Self>,
+ ) -> Result<ArrayRef> {
+ let array: Int64Array = if series_state.step > 0 {
+ if series_state.include_end {
+ Int64Array::from_iter_values(
+ (series_state.current..=series_state.end)
+ .step_by(series_state.step as usize)
+ .take(series_state.batch_size),
+ )
+ } else {
+ Int64Array::from_iter_values(
+ (series_state.current..series_state.end)
+ .step_by(series_state.step as usize)
+ .take(series_state.batch_size),
+ )
+ }
+ } else {
+ // step < 0
+ let cur = series_state.current as i128;
Review Comment:
I gave it a go locally. This seems to do the trick:
```rust
if series_state.include_end {
Int64Array::from_iter_values(
(series_state.end..=series_state.current)
.rev()
.step_by(-series_state.step as usize)
.take(series_state.batch_size),
)
} else {
Int64Array::from_iter_values(
((series_state.end + 1)..=series_state.current)
.rev()
.step_by(-series_state.step as usize)
.take(series_state.batch_size),
)
}
```
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "rluvaton (via GitHub)" <gi...@apache.org>.
rluvaton commented on PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#issuecomment-3678216185
@alamb I might increased the benchmark too much, is it stuck?
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "rluvaton (via GitHub)" <gi...@apache.org>.
rluvaton commented on PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#issuecomment-3678672009
show benchmark queue
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "alamb-ghbot (via GitHub)" <gi...@apache.org>.
alamb-ghbot commented on PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#issuecomment-3678817260
🤖 `./gh_compare_branch_bench.sh` [compare_branch_bench.sh](https://github.com/alamb/datafusion-benchmarking/blob/main/scripts/compare_branch_bench.sh) Running
Linux aal-dev 6.14.0-1018-gcp #19~24.04.1-Ubuntu SMP Wed Sep 24 23:23:09 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
Comparing improve-range-and-generate-series-for-int-64 (67b2d0404ed65f27526b1f803b18abeeaa7027e9) to 4249e4ecd354e6060e2a4ea33f38552366299a4e [diff](https://github.com/apache/datafusion/compare/4249e4ecd354e6060e2a4ea33f38552366299a4e..67b2d0404ed65f27526b1f803b18abeeaa7027e9)
BENCH_NAME=range_and_generate_series
BENCH_COMMAND=cargo bench --features=parquet --bench range_and_generate_series
BENCH_FILTER=
BENCH_BRANCH_NAME=improve-range-and-generate-series-for-int-64
Results will be posted here when complete
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "alamb-ghbot (via GitHub)" <gi...@apache.org>.
alamb-ghbot commented on PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#issuecomment-3696805577
🤖: Benchmark completed
<details><summary>Details</summary>
<p>
```
group improve-range-and-generate-series-for-int-64 main
----- -------------------------------------------- ----
generate_series(0, 1000000, 5) 1.81 836.7±12.13µs ? ?/sec 1.00 462.2±6.92µs ? ?/sec
generate_series(1000000) 2.19 3.4±0.02ms ? ?/sec 1.00 1552.7±14.22µs ? ?/sec
generate_series(1000000, 0, -5) 1.00 327.6±7.64µs ? ?/sec 1.39 454.4±6.16µs ? ?/sec
range(0, 1000000, 5) 1.00 388.5±3.23µs ? ?/sec 1.16 450.3±4.20µs ? ?/sec
range(1000000) 1.00 1214.4±7.87µs ? ?/sec 1.28 1556.8±16.35µs ? ?/sec
range(1000000, 0, -5) 1.00 323.2±3.67µs ? ?/sec 1.40 452.1±8.87µs ? ?/sec
```
</p>
</details>
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "alamb-ghbot (via GitHub)" <gi...@apache.org>.
alamb-ghbot commented on PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#issuecomment-3678179025
🤖 `./gh_compare_branch_bench.sh` [compare_branch_bench.sh](https://github.com/alamb/datafusion-benchmarking/blob/main/scripts/compare_branch_bench.sh) Running
Linux aal-dev 6.14.0-1018-gcp #19~24.04.1-Ubuntu SMP Wed Sep 24 23:23:09 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
Comparing improve-range-and-generate-series-for-int-64 (67b2d0404ed65f27526b1f803b18abeeaa7027e9) to 4249e4ecd354e6060e2a4ea33f38552366299a4e [diff](https://github.com/apache/datafusion/compare/4249e4ecd354e6060e2a4ea33f38552366299a4e..67b2d0404ed65f27526b1f803b18abeeaa7027e9)
BENCH_NAME=range_and_generate_series
BENCH_COMMAND=cargo bench --features=parquet --bench range_and_generate_series
BENCH_FILTER=
BENCH_BRANCH_NAME=improve-range-and-generate-series-for-int-64
Results will be posted here when complete
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb commented on PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#issuecomment-3696670210
run benchmark range_and_generate_series
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "rluvaton (via GitHub)" <gi...@apache.org>.
rluvaton commented on PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#issuecomment-3696815910
Closing as it is fast enough and this have some regression
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb commented on PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#issuecomment-3678818049
> @alamb I might increased the benchmark too much, is it stuck?
I don't know what happened -- the runner had died. I restarted t
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "alamb-ghbot (via GitHub)" <gi...@apache.org>.
alamb-ghbot commented on PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#issuecomment-3678835978
🤖: Benchmark completed
<details><summary>Details</summary>
<p>
```
group improve-range-and-generate-series-for-int-64 main
----- -------------------------------------------- ----
generate_series(0, 1000000, 5) 1.86 838.9±8.69µs ? ?/sec 1.00 449.9±6.31µs ? ?/sec
generate_series(1000000) 2.25 3.5±0.05ms ? ?/sec 1.00 1552.1±21.57µs ? ?/sec
generate_series(1000000, 0, -5) 1.00 326.4±6.72µs ? ?/sec 1.42 462.1±6.47µs ? ?/sec
range(0, 1000000, 5) 1.00 393.8±12.61µs ? ?/sec 1.15 453.1±10.31µs ? ?/sec
range(1000000) 1.00 1237.9±19.84µs ? ?/sec 1.26 1559.6±24.79µs ? ?/sec
range(1000000, 0, -5) 1.00 319.1±5.62µs ? ?/sec 1.44 460.7±15.48µs ? ?/sec
```
</p>
</details>
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb commented on PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#issuecomment-3696670052
These cases seems to have slowed down
```
generate_series(0, 1000000, 5) 1.86 838.9±8.69µs ? ?/sec 1.00 449.9±6.31µs ? ?/sec
generate_series(1000000) 2.25 3.5±0.05ms ? ?/sec 1.00 1552.1±21.57µs ? ?/sec
```
Is that expected?
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "rluvaton (via GitHub)" <gi...@apache.org>.
rluvaton commented on PR #19431:
URL: https://github.com/apache/datafusion/pull/19431#issuecomment-3678672236
show benchmarks queue
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Re: [PR] perf: improve `range` and `generate_series` for `Int64` [datafusion]
Posted by "rluvaton (via GitHub)" <gi...@apache.org>.
rluvaton closed pull request #19431: perf: improve `range` and `generate_series` for `Int64`
URL: https://github.com/apache/datafusion/pull/19431
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