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Posted to issues@spark.apache.org by "Hyukjin Kwon (Jira)" <ji...@apache.org> on 2022/10/13 12:54:00 UTC
[jira] [Updated] (SPARK-40659) Schema evolution for protobuf (and Avro too?)
[ https://issues.apache.org/jira/browse/SPARK-40659?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyukjin Kwon updated SPARK-40659:
---------------------------------
Component/s: Protobuf
> 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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