flink sql支持监听单个文件内容变化吗？文件中每一行是一条记录，对外输出的模式可以全量或者变量。
cause by: java.lang.RuntimeException: Error while getting state
org.apache.flink.util.StateMigrationException: For heap backends, the new state
serializer must not be incompatible with the old state serializer
Thank you very much,I think I got it.
I'm gonna learn more about the window state.
At 2022-08-18 10:52:25, "yanfei lei" wrote:
>Hi, there are two methods on the Context object that a process() invocation
>receives that allows access to the two types of state:
>
> -
