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Posted to issues@spark.apache.org by "Hyukjin Kwon (Jira)" <ji...@apache.org> on 2022/07/05 02:48:00 UTC

[jira] [Commented] (SPARK-39587) Schema Evolution for Stateful Pipelines in Structured Streaming

    [ https://issues.apache.org/jira/browse/SPARK-39587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17562319#comment-17562319 ] 

Hyukjin Kwon commented on SPARK-39587:
--------------------------------------

cc [~kabhwan] FYI

> Schema Evolution for Stateful Pipelines in Structured Streaming 
> ----------------------------------------------------------------
>
>                 Key: SPARK-39587
>                 URL: https://issues.apache.org/jira/browse/SPARK-39587
>             Project: Spark
>          Issue Type: Improvement
>          Components: Structured Streaming
>    Affects Versions: 3.3.0
>            Reporter: Boyang Jerry Peng
>            Priority: Major
>
> Support for schema evolution of stateful operators is non-existent. There is no clear path to evolve the schema for existing built-in stateful operators.  For use defined stateful operators such as map/flatMapGroupsWithState, there is no path for evolving state as well.



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