jorisvandenbossche commented on PR #39567:
URL: https://github.com/apache/arrow/pull/39567#issuecomment-1893190495

   So I could nail down the failure to the following:
   
   
https://github.com/apache/arrow/blob/ac50918a63f13088a5ea9e6c27a9fadbbb19d53f/cpp/src/arrow/dataset/file_parquet.cc#L814-L823
   
   In the above snippet, sometimes `manifest_->descr->num_columns()` returns 
-1, and so then we do a vector resize with -1 which triggers the 
`std::length_error` crash. 
   
   But I have no idea why that would sometimes return -1, and only on MacOS 
when running the test from an installed wheel (not any of the other Mac builds 
where we build Arrow directly)


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