blongworth commented on issue #39912:
URL: https://github.com/apache/arrow/issues/39912#issuecomment-2648335956
Hi @zanmato1984, hardest thing will probably be finding the minimal dataset
that will produce the issue. Once there's a minimal dataset that triggers the
issue, reproducing in C++ or python would help isolate the issue. LMK if I can
help with setting up or testing in R.
For my data, I've whittled it down to the summarize step that counts
elements in each group:
```
dsd <- ds |>
group_by(timestamp) |>
summarize(n = n()) |>
collect()
```
I'm not sure whether it's the summarizing or the counting. I still see the
problem in arrow 19.0.0.
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