Hi 王炳焱,
thanks for reaching out to the Flink community and sorry for the late
reply. Unfortunately, Flink SQL does not support state backwards
compatibility. There is no clear pointer in the documentation that states
that. I created FLINK-22799 [1] to cover this. In the mean time, you could
try usi
When I upgraded from Flink1.10.0 to Flink1.12.0. Unable to restore SavePoint
And prompt the following error
2021-05-14 22:02:44,716 WARN org.apache.flink.metrics.MetricGroup
[] - The operator name Calc(select=[((CAST((log_info
get_json_object2 _UTF-16LE'eventTime')
