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Posted to github@datafusion.apache.org by "andygrove (via GitHub)" <gi...@apache.org> on 2025/12/23 16:43:32 UTC
[I] Improve performance of `contains` expression [datafusion-comet]
andygrove opened a new issue, #2972:
URL: https://github.com/apache/datafusion-comet/issues/2972
### What is the problem the feature request solves?
`CometStringExpressionBenchmark` shows poor performance for `contains`:
```
OpenJDK 64-Bit Server VM 11.0.22+7-LTS on Mac OS X 14.6.1
Apple M3 Max
contains: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
------------------------------------------------------------------------------------------------------------------------
Spark 10 69 27 0.1 9603.6 1.0X
Comet (Scan) 11 81 26 0.1 10928.1 0.9X
Comet (Scan + Exec) 44 91 20 0.0 42889.5 0.2X
```
### Describe the potential solution
Review benchmark to make sure it is valid, then try and optimize performance.
### Additional context
_No response_
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Re: [I] Improve performance of `contains` expression [datafusion-comet]
Posted by "andygrove (via GitHub)" <gi...@apache.org>.
andygrove closed issue #2972: Improve performance of `contains` expression
URL: https://github.com/apache/datafusion-comet/issues/2972
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