ARBS-23 opened a new issue, #42531:
URL: https://github.com/apache/superset/issues/42531
### Bug description
When exporting a chart whose name is very long (for example, 250
characters), the exported ZIP contains a YAML filename in the format
`{chart_name}_{chart_id}.yaml` that becomes too long for Windows file
extraction.
As a result, the ZIP export is created successfully, but Windows users
cannot unzip it.
### To Reproduce
1. Log in to Superset.
2. Go to **Charts**.
3. Export a chart with a name around 250 characters long.
4. Try to extract the exported ZIP on Windows.
### Expected behavior
The exported chart package should use a safe filename length so it can be
extracted on Windows without errors.
### Actual behavior
The exported ZIP includes a filename like `{chart_name}_{chart_id}.yaml`
that exceeds Windows path/filename limits, causing extraction to fail.
### Screenshots/recordings
<img width="1920" height="911" alt="Image"
src="https://github.com/user-attachments/assets/9c6621be-c90b-4f5b-852a-8300cf45f006";
/>
<img width="1904" height="867" alt="Image"
src="https://github.com/user-attachments/assets/0b882599-3c93-4625-bc85-c34215663588";
/>
### Superset version
6.1.0
### Python version
3.11
### Node version
16
### Browser
Chrome
### Additional context
This appears to be caused by export filename generation using the full chart
name plus chart ID, without truncation or sanitization for Windows-compatible
limits.
A possible fix would be to:
- truncate exported filenames to a safe maximum length, or
- use a shorter slug-based naming scheme for chart YAML files inside the ZIP.
This is especially visible on Windows, where extraction fails for long
filenames even though the export itself succeeds.
### Checklist
- [x] I have searched Superset docs and Slack and didn't find a solution to
my problem.
- [x] I have searched the GitHub issue tracker and didn't find a similar bug
report.
- [x] I have checked Superset's logs for errors and if I found a relevant
Python stacktrace, I included it here as text in the "additional context"
section.
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