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https://issues.apache.org/jira/browse/FLINK-6090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15971958#comment-15971958
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ASF GitHub Bot commented on FLINK-6090:
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Github user hequn8128 closed the pull request at:
https://github.com/apache/flink/pull/3696
> Add RetractionRule at the stage of decoration
> ---------------------------------------------
>
> Key: FLINK-6090
> URL: https://issues.apache.org/jira/browse/FLINK-6090
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: Shaoxuan Wang
> Assignee: Hequn Cheng
>
> Implement optimizer for retraction:
> 1.Add RetractionRule at the stage of decoration，which can derive the
> replace table/append table, NeedRetraction property.
> 2.Match the NeedRetraction and replace table, mark the accumulating mode
>
> When this task is finished, we can turn on retraction for different operators
> according to accumulating mode.
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