问题
I am using Flink 1.4.1 and I am using CEP. I have to calculate lifetime order amount by the same user in each order.
So when I sending orders Order A -> amount: 500, Order B -> amount: 200, Order C -> amount: 300 and calculating key by the user using states. Sometime in Order B, it's showing 700 and sometimes 200.
Means sometimes it's adding order A in B, sometimes not. I am running code in 6 parallelisms. Is this parallelism issue or distributed state issue?
When I run the whole program with the single parallelism, then the program behaves correctly and shows the correct result.
Regards, Pranjal
来源：https://stackoverflow.com/questions/51358377/flink-program-behaves-differently-in-parallelism