llama90 commented on PR #43230:
URL: https://github.com/apache/arrow/pull/43230#issuecomment-2226988182
@kou Hello. Could you review this when your free time? Thank you.
I am using an M1 MacBook, and I noticed that my local tests are failing
while the CI tests are passing. I found that certain environments are not
running the tests for `ARROW_S3`, including the following:
- ARM64 macOS 14 C++
- [CI Test
Log](https://github.com/apache/arrow/actions/runs/9898696633/job/27346070640?pr=43230#step:13:67)
- AMD64 Windows 2019 C++17 AVX2
- [CI Test
Log](https://github.com/apache/arrow/actions/runs/9898696633/job/27346070856?pr=43230#step:9:689)
- ...
I encountered some failing test cases. Is it safe to ignore these for now?
How should I proceed to improve the situation? I'm curious why the S3 tests are
excluded in these environments and how to address this issue.
https://github.com/apache/arrow/blob/718415030f8ebcad14bc3fa10906beca6526c5e9/cpp/src/arrow/filesystem/s3fs_test.cc#L954-L955
I suspect that some tests might be designed to test the _file system_
semantics on _object storage_ (`MinIO`). For example, in object storage,
uploading an object (file) with the same prefix (folder) often does not check
for pre-existence and may manage via versioning or overwrite the existing
object.
However, upon examining the tests, they seem to fail when a file already
exists, but because MinIO is used internally for testing, it operates with
object storage semantics, leading to test failures.
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