MaxGekk edited a comment on issue #27441: [SPARK-30668][SQL] Support 
`SimpleDateFormat` patterns in parsing timestamps/dates strings
URL: https://github.com/apache/spark/pull/27441#issuecomment-581522914
 
 
   > since we use the new formatter by default, shall we try the old formatter 
if the new formatter doesn't work? Then users don't need to enable the legacy 
config for some cases.
   
   This may have some downsides like some values in a column could be parsed by 
old parser which is based on combined calendar (Julian + Gregorian) but another 
values **in the same column** by new one which uses Proleptic Gregorian 
calendar. This could make user life harder.

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