jonkeane opened a new issue, #46178:
URL: https://github.com/apache/arrow/issues/46178
### Describe the enhancement requested
When debugging some sanitizer issues, I noticed:
```
Start test: streaming map_batches into an ExecPlan
'test-dataset.R:666:3' [success]
'test-dataset.R:677:3' [success]
'test-dataset.R:689:3' [success]
'test-dataset.R:698:3' [success]
/Users/runner/work/crossbow/crossbow/arrow/cpp/src/arrow/acero/source_node.cc:76:
An input buffer was poorly aligned. This could lead to crashes or poor
performance on some hardware. Please ensure that all Acero sources generate
aligned buffers, or change the unaligned buffer handling configuration to
silence this warning.
'test-dataset.R:709:3' [success]
End test: streaming map_batches into an ExecPlan
```
https://github.com/apache/arrow/blob/c2ec1cda88918a3920b7b29eca8d2e3ca7a49fb2/r/tests/testthat/test-dataset.R#L698-L706
is the test that the warning is popping up on.
### Component(s)
R
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