tustvold opened a new issue, #4033:
URL: https://github.com/apache/arrow-rs/issues/4033
**Describe the bug**
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A clear and concise description of what the bug is.
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When casting strings to timestamps, they are converted to nanoseconds using
`string_to_timestamp_nanos`. This results in erroneous overflow when handling
quantities that can't be represented in an i64 as nanoseconds, but can be
encoded as a larger timeunit.
**To Reproduce**
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Steps to reproduce the behavior:
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```
#[test]
fn test_cast_string_to_timestamp_overflow() {
// let array =
TimestampSecondArray::from(vec![chrono::DateTime::MAX_UTC]);
// let array = cast(&array, &DataType::Utf8).unwrap();
let array = StringArray::from(vec!["9800-09-08T12:00:00.123456789"]);
let result = cast(&array, &DataType::Timestamp(TimeUnit::Second,
None)).unwrap();
let result = result.as_primitive::<TimestampSecondType>();
assert_eq!(result.values(), &[247112596800]);
}
```
**Expected behavior**
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A clear and concise description of what you expected to happen.
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**Additional context**
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