Hi, Konstantin > . Would we support a temporal join with a changelog stream with > event time semantics by ignoring DELETE messages or would it be completed > unsupported.
I don’t know the percentage of this feature in temporal scenarios. Comparing to support the approximate event time join by ignoring DELETE message or by extracting an approximate event time for DELET message, I’m not sure is this acceptable for user even if we have explained the limitation of approximate event time join, I tend to do not support this feature, because we can not ensure the semantic of event time and it may lead an incorrect result for user in some scenarios. If the percentage is highly enough and most user cases can accept the approximate event time, I'm ok to support it for usability although it doesn’t implements the event time semantic strictly. Cheers, Leonard Xu
