yaooqinn commented on pull request #28650:
URL: https://github.com/apache/spark/pull/28650#issuecomment-635783265
OK
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yaooqinn commented on pull request #28650:
URL: https://github.com/apache/spark/pull/28650#issuecomment-635449894
But maybe we should apply `SparkUpgradeException ` to `format()` as
`parse()` for better error msg for end-users
yaooqinn commented on pull request #28650:
URL: https://github.com/apache/spark/pull/28650#issuecomment-635448724
No the pattern `yyy-MM-dd` is valid for both version of formatters,
but calling the `format()` throws an exception in the new one but silently
suppressed in
yaooqinn commented on pull request #28650:
URL: https://github.com/apache/spark/pull/28650#issuecomment-635436944
> ```
> spark-sql> select from_unixtime(1, 'yyy-MM-dd');
> NULL
> ```
>
> Why we don't throw `SparkUpgradeException` in this case?
that logic
