tustvold opened a new pull request, #2760:
URL: https://github.com/apache/arrow-rs/pull/2760
# Which issue does this PR close?
Follow on to #2597
# Rationale for this change
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```
$ time cargo build --release --no-default-features
________________________________________________________
Executed in 22.13 secs fish external
usr time 120.80 secs 561.00 micros 120.80 secs
sys time 3.70 secs 107.00 micros 3.69 secs
```
```
$ time cargo build --release --no-default-features --features dyn_arith_dict
________________________________________________________
Executed in 38.73 secs fish external
usr time 167.26 secs 613.00 micros 167.26 secs
sys time 4.26 secs 106.00 micros 4.26 secs
```
# What changes are included in this PR?
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sometimes worth providing a summary of the individual changes in this PR.
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Gates arithmetic operations between primitive dictionary arrays behind a
feature flag. Primitive dictionaries are fairly niche, array operations on
primitive dictionaries are even more niche. I think the benefits to compilation
time justify the overheads of an additional feature flag
# Are there any user-facing changes?
Arithmetic operations on dictionaries now require enabling via a feature flag
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