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I tried to create trigger using the following command of Apache IoTDB:

CREATE TRIGGER `alert-listener-sgld1s1` AFTER INSERT ON root.sgl.d1.s1 AS 'org.apache.iotdb.db.engine.trigger.example.AlertListener' WITH ( 'lo' = '0', 'hi'= '100.0').

However I got an error said that

java.lang.ClassNotFoundException: org.apache.iotdb.db.engine.trigger.example.AlertListener.

I wonder what did this jar package ClusterAlertingExample.jar do? Should I write the trigger processing class in the ClusterAlertingExample.jar package myself?

Adriaan
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user21750676
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1 Answers1

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The class names specified after AS is the fully qualified class name of the class in the jar package you are using for Apache IoTDB. You can use implement trigger class to create an interface, set a trigger type, packed into jar package and register it. You can also refer to the instruction in the user manual of the official website.

Xuan Ronaldo
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