Github user MaxGekk commented on the issue:
https://github.com/apache/spark/pull/23150
> Are there any other behavior changes with the new code, besides being
able to parse microseconds?
The main one is new parser doesn't have the fallback to
`DateTimeUtils.stringToTime` if it cannot parse its input. Though I am not sure
about this fallback ... if an user wants to parse input which doesn't fit to
specified pattern (like `"yyyy-MM-dd'T'HH:mm:ss.SSSXXX"`) why should guess and
try another pattern instead of forcing him/her to set appropriate one. I could
guess this fallback was added for backward compatibility to previous versions.
If so, should we still keep compatibility to such version?
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