does the default within behavior of flink cep handle out of order events (relative to event time)? obviously, it'd be best if the event time was guaranteed correct, but sometimes it's too difficult to do.
do people end up writing different patterns with some event orderings reversed to capture these out of order events and push unmatched/partial/timed-out events from side channels off the main pattern matching through this?
is it better to invest in some pre-processing to try and guarantee ordering?
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