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https://issues.apache.org/jira/browse/FLINK-23246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17375713#comment-17375713
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JING ZHANG commented on FLINK-23246:
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[~twalthr] That would be great, thanks a lot. I would tell you as soon as 
possible after the pr is ready.

> Refactor the time indicator materialization
> -------------------------------------------
>
>                 Key: FLINK-23246
>                 URL: https://issues.apache.org/jira/browse/FLINK-23246
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / Planner
>            Reporter: JING ZHANG
>            Assignee: JING ZHANG
>            Priority: Major
>
> Refactor the time indicator materialization, including
> 1. Move `time_indicator` materialize after `logical_rewrite` phase, which is 
> closely before the physical optimization 
> 2. Port `RelTimeIndicatorConverter` from scala to Java
> 3. Refator `RelTimeIndicatorConverter` to match `FlinkLogicalRel`



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