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https://issues.apache.org/jira/browse/SPARK-31176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan reassigned SPARK-31176:
-----------------------------------
Assignee: Kent Yao
> Remove support for 'e'/'c' as datetime pattern charactar
> ---------------------------------------------------------
>
> Key: SPARK-31176
> URL: https://issues.apache.org/jira/browse/SPARK-31176
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Kent Yao
> Assignee: Kent Yao
> Priority: Major
>
> The meaning of 'u' was day number of week in SimpleDateFormat, it was changed
> to year in DateTimeFormatter. So we keep the old meaning of 'u' by
> substituting 'u' to 'e' internally and use DateTimeFormatter to parse the
> pattern string. In DateTimeFormatter, the 'e' and 'c' also represents
> day-of-week, we should mark them as illegal pattern character to stay the
> same as before.
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