tustvold opened a new pull request, #2597:
URL: https://github.com/apache/arrow-rs/pull/2597
# Which issue does this PR close?
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Closes #2596
# Rationale for this change
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See ticket, improves release compilation times by ~50%.
With dictionary comparison kernels
```
________________________________________________________
Executed in 84.84 secs fish external
usr time 227.45 secs 662.00 micros 227.44 secs
sys time 6.23 secs 131.00 micros 6.23 secs
```
Without dictionary comparison kernels
```
________________________________________________________
Executed in 21.45 secs fish external
usr time 154.13 secs 0.00 micros 154.13 secs
sys time 6.24 secs 880.00 micros 6.24 secs
```
# What changes are included in this PR?
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Adds a new `dyn_cmp_dict` feature flag. I opted to not enable this by
default as I think the rarity of people relying on this functionality, combined
with the significant bloat reduction I think warrants a breaking change.
# Are there any user-facing changes?
Yes
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