TanookiToad commented on issue #336:
URL: https://github.com/apache/arrow-julia/issues/336#issuecomment-1336261151
> @TanookiToad - this is strange `copy(df)` and `df[:, :]` are almost the
same (their only difference is how metadata is handled but it should not affect
the result here)
Yeah. I was wrong about that. There's actually no difference in `copy(df)`
vs `df[:, :]` on this issue. Actually after more tests, it becomes pretty
cofusing to me that only sometimes loaded data can be rewritten on Windows.
For example, the following code will work if `"test.arrow"` is constructed
using `DataFrame(rand(10000, 1000), :auto)`, but it will raise an error if it's
a smaller data like `DataFrame(rand(100, 100), :auto)` or a larger data like
`DataFrame(rand(10000, 10000), :auto)`
```julia
df = copy(DataFrame(Arrow.Table("test.arrow")))
Arrow.write("test.arrow", df)
```
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