[jira] [Resolved] (SPARK-40659) Schema evolution for protobuf (and Avro too?)

["Raghu Angadi (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-40659?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Raghu Angadi resolved SPARK-40659.
----------------------------------
    Resolution: Won't Do

> Schema evolution for protobuf (and Avro too?)
> ---------------------------------------------
>
>                 Key: SPARK-40659
>                 URL: https://issues.apache.org/jira/browse/SPARK-40659
>             Project: Spark
>          Issue Type: Improvement
>          Components: Protobuf, Structured Streaming
>    Affects Versions: 3.3.0
>            Reporter: Raghu Angadi
>            Priority: Major
>
> Protobuf & Avro should support schema evolution in streaming. We need to throw a specific error message when we detect newer version of the the schema in schema registry.
> A couple of options for detecting version change at runtime:
>  * How do we detect newer version from schema registry? It is contacted only during planning currently.
>  * We could detect version id in coming messages.
>  ** What if the id in the incoming message is newer than what our schema-registry reports after the restart?
>  *** This indicates delayed syncs between customers schema-registry servers (should be rare). We can keep erroring out until it is fixed.
>  *** Make sure we log the schema id used during planning.



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