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Posted to dev@flink.apache.org by "Jark Wu (Jira)" <ji...@apache.org> on 2020/03/31 15:24:00 UTC

[jira] [Created] (FLINK-16887) Refactor retraction rules to support inferring ChangelogMode

Jark Wu created FLINK-16887:
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             Summary: Refactor retraction rules to support inferring ChangelogMode
                 Key: FLINK-16887
                 URL: https://issues.apache.org/jira/browse/FLINK-16887
             Project: Flink
          Issue Type: Improvement
          Components: Table SQL / Planner
            Reporter: Jark Wu
            Assignee: Jark Wu
             Fix For: 1.11.0


Current retraction machanism only support 2 message kinds (+ and -). However, since FLIP-95, we will introduce more message kinds to users (insert/delete/update_before/update_after). 

In order to support that, we should first refactor current retraction rules to support ChangelogMode inference. In previous, every node will be attached with a AccMode trait after retraction rule. In the proposed design, we will infer ChangelogMode trait for every node. 

A detailed design documentation will be attached soon. 



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