Boyang Chen created KAFKA-7566:
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Summary: Add sidecar job to leader (or a random single follower)
only
Key: KAFKA-7566
URL: https://issues.apache.org/jira/browse/KAFKA-7566
Project: Kafka
Issue Type: Improvement
Reporter: Boyang Chen
Hey there,
recently we need to add an archive job to a streaming application. The caveat
is that we need to make sure only one instance is doing this task to avoid
potential race condition, and we also don't want to schedule it as a regular
stream task so that we will be blocking normal streaming operation.
Although we could do so by doing a zk lease, I'm raising the case here since
this could be some potential use case for streaming job also. For example,
there are some `leader specific` operation we could schedule in DSL instead of
adhoc manner.
Let me know if you think this makes sense to you, thank you!
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