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The main reference for this article: scene reproduction 5
This time the scene is even stranger. Because a rule does not trigger data, we will build a set of local environment with data and rules on site. Testing is possible, but on site it is not.
After investigating for a long time, I couldn't find the reason, and I don't know where to start.
Later, I ruled out other factors, let this task consume a temporary topic, write a triggerable data into it, and then it didn't trigger.
Flink has multiple streams for one task, as follows