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Posted to issues@flink.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2023/03/10 14:58:00 UTC

[jira] [Updated] (FLINK-30129) Push projection through ChangelogNormalize

     [ https://issues.apache.org/jira/browse/FLINK-30129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-30129:
-----------------------------------
    Labels: pull-request-available  (was: )

> Push projection through ChangelogNormalize
> ------------------------------------------
>
>                 Key: FLINK-30129
>                 URL: https://issues.apache.org/jira/browse/FLINK-30129
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table SQL / Planner
>            Reporter: Jark Wu
>            Assignee: Jark Wu
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.18.0
>
>
> Currently, the ChangelogNormalize node is generated during the physical optimization phase. That means the projection is not pushed through ChangelogNormalize if the {{TableSource}} doesn't support {{SupportsProjectionPushDown}}. We can implement such optimization to reduce the state size (fewer columns in state value) and better throughput (only changes on the selected columns will be emitted). 



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