Jackie-Jiang commented on a change in pull request #7804:
URL: https://github.com/apache/pinot/pull/7804#discussion_r763492506
##########
File path:
pinot-spi/src/main/java/org/apache/pinot/spi/data/DateTimeFormatPatternSpec.java
##########
@@ -52,7 +66,28 @@ public DateTimeFormatPatternSpec(String timeFormat, String
sdfPatternWithTz) {
String timezoneString = m.group(TIMEZONE_GROUP).trim();
_dateTimeZone =
DateTimeZone.forTimeZone(TimeZone.getTimeZone(timezoneString));
}
+ validateSdfPattern(_sdfPattern, requireLexicographicOrdering);
_dateTimeFormatter =
DateTimeFormat.forPattern(_sdfPattern).withZone(_dateTimeZone).withLocale(DEFAULT_LOCALE);
+
+ }
+ }
+
+ private static void validateSdfPattern(String sdfPattern, boolean
requireLexicographicOrdering) {
Review comment:
We should disallow all non-lexicographic date time format as it won't
work properly. The range query will not follow the time ordering, which is in
most cases unexpected if not all. IMO it is safe to add this validation to the
schema.
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