ueshin opened a new pull request, #54528:
URL: https://github.com/apache/spark/pull/54528
### What changes were proposed in this pull request?
Not make timezone lower case.
### Why are the changes needed?
In some environment, lowercase timezone is not recognized by pandas' search.
```
...
File "/.../pandas/_libs/tslibs/timezones.pyx", line 133, in
pandas._libs.tslibs.timezones.maybe_get_tz
File "/.../pandas/_libs/tslibs/timezones.pyx", line 158, in
pandas._libs.tslibs.timezones.maybe_get_tz
File "/.../zoneinfo/_common.py", line 24, in load_tzdata
raise ZoneInfoNotFoundError(f"No time zone found with key {key}")
zoneinfo._common.ZoneInfoNotFoundError: 'No time zone found with key etc/utc'
```
If it's `Etc/UTC', it works.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Manually.
### Was this patch authored or co-authored using generative AI tooling?
No.
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