Hi experts,
Here is my use case, it's a flink stateless streaming job for message
validation.
1. read from a kafka topic
2. perform validation of message, which requires query external system
2a. the metadata from the external system will be cached in memory
for 15minutes
2b. there is another stream that will send updates to update the
cache if metadata changed within 15 minutes
3. if message is valid, publish to valid topic
4. if message is invalid, publish to error topic
5. if the external system is down, the message is marked as invalid with
different error code, and published to the same error topic.
Ask:
For those messages that failed due to external system failures, it requires
manual replay of those messages.
Is there a way to pause the job if there is an external system failure, and
resume once the external system is online?
Or are there any other suggestions to allow auto retry such error?
Thanks a lot!
Eleanore
