assignUser commented on issue #15055:
URL: https://github.com/apache/arrow/issues/15055#issuecomment-1362638073
I am not sure why it does not work in the summarise but this works:
```
open_dataset(tf) %>% distinct(mpg) %>% count() %>% collect()
# A tibble: 1 × 1
n
<int>
1 25
```
Documentatiuon wise there is
[`?acero`](https://arrow.apache.org/docs/r/reference/acero.html) but that is
not summarise specifc.
@paleolimbot any idea what the issue is here implementation wise?
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