[jira] [Updated] (FLINK-20264) Zero-downtime / dynamic function upgrades in Stateful Functions

["Tzu-Li (Gordon) Tai (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-20264?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tzu-Li (Gordon) Tai updated FLINK-20264:
----------------------------------------
    Issue Type: New Feature  (was: Task)

> Zero-downtime / dynamic function upgrades in Stateful Functions
> ---------------------------------------------------------------
>
>                 Key: FLINK-20264
>                 URL: https://issues.apache.org/jira/browse/FLINK-20264
>             Project: Flink
>          Issue Type: New Feature
>          Components: Stateful Functions
>            Reporter: Tzu-Li (Gordon) Tai
>            Priority: Major
>             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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