MaxGekk commented on code in PR #41078:
URL: https://github.com/apache/spark/pull/41078#discussion_r1192102884
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/TimestampFormatter.scala:
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@@ -163,27 +165,66 @@ class Iso8601TimestampFormatter(
protected lazy val legacyFormatter = TimestampFormatter.getLegacyFormatter(
pattern, zoneId, locale, legacyFormat)
+ override def parseOptional(s: String): Option[Long] = {
+ try {
+ val parsed = formatter.parseUnresolved(s, new ParsePosition(0))
Review Comment:
`parseUnresolved()` doesn't validate correctness of its result, see its docs:
```
The result of this method is TemporalAccessor which represents the data as
seen in the input. Values are not validated, thus parsing a date string of
'2012-00-65' would result in a temporal with three fields - year of '2012',
month of '0' and day-of-month of '65'.
```
I think you should check the result yourself somewhere.
Could you re-check the example from the docs: '2012-00-65' and add a test,
please.
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