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https://issues.apache.org/jira/browse/FLINK-41371?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated FLINK-41371:
-----------------------------------
Labels: pull-request-available (was: )
> Row-semantic PTFs force retract mode on upsert inputs
> -----------------------------------------------------
>
> Key: FLINK-41371
> URL: https://issues.apache.org/jira/browse/FLINK-41371
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 2.3.0, 2.4.0
> Reporter: Gustavo de Morais
> Assignee: Gustavo de Morais
> Priority: Major
> Labels: pull-request-available
>
> PTFs with row semantics always receive retractions for upsert inputs, because
> {{FlinkChangelogModeInferenceProgram}} requires UPDATE_BEFORE whenever there
> is no PARTITION BY. This adds an unnecessary {{ChangelogNormalize}} and hash
> exchange, e.g. for {{TO_CHANGELOG}} with an {{op_mapping}} without
> UPDATE_BEFORE.
> We should keep upsert mode when the input has an upsert key and the PTF is
> insert-only or passes all columns through, so the PTF can be chained to its
> input.
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