Tzu-Li (Gordon) Tai created FLINK-20264:
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Summary: Zero-downtime / dynamic function upgrades in Stateful
Functions
Key: FLINK-20264
URL: https://issues.apache.org/jira/browse/FLINK-20264
Project: Flink
Issue Type: Task
Components: Stateful Functions
Reporter: Tzu-Li (Gordon) Tai
Fix For: statefun-2.3.0
Currently, due to how functions can be executed as stateless deployments
separate to the StateFun runtime, they can be easily upgraded with
zero-downtime.
However, up to now there are still some restrictions to what can be done
without restarting StateFun processes:
* Can't upgrade existing functions to declare new persisted state
* Can't add new functions to an existing StateFun application, and have
messages routed to it
The end goal of this epic is to enable the above operations for function
deployments, without the need to restart the StateFun runtime. Further details
can be found in subtasks of this JIRA.
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