When you upgrade any of your scalable storage components, to avoid any event loss, you must pause event forwarding from Collector Manager to Kafka before you upgrade. Once the upgrade is complete, you must resume event forwarding to Kafka.
To pause or resume event forwarding to Kafka:
In Sentinel Main, click Storage > Scalable Storage > Advanced Configuration > Kafka.
(Conditional) Before you upgrade the scalable storage component, pause event forwarding by adding the following property and set it to true:
pause.events.tokafka
(Conditional) After you upgrade the scalable storage component, resume event forwarding by setting the following property to false:
pause.events.tokafka
Click Save.