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https://issues.apache.org/jira/browse/FLINK-20322?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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godfrey he updated FLINK-20322:
-------------------------------
    Description: {{table.optimizer.union-all-as-breakpoint-disabled}} is 
defined in {{RelNodeBlockPlanBuilder}}  and is an internal experimental config. 
While {{disabled}} and {{false}} (as default value) is very obscure.  I suggest 
to change {{table.optimizer.union-all-as-breakpoint-disabled}} to 
{{table.optimizer.union-all-as-breakpoint-enabled}} and use {{true}} as default 
value, which is easier to understand. As this config is an internal 
experimental config, we don't mark it as deprecated.  (was: 
{{table.optimizer.union-all-as-breakpoint-disabled}} is defined in 
{{RelNodeBlockPlanBuilder}}  and is an internal experimental config. While 
{{disabled}} and {{false}} as default value is very obscure.  I suggest to 
change {{table.optimizer.union-all-as-breakpoint-disabled}} to 
{{table.optimizer.union-all-as-breakpoint-enabled}} and use {{true}} as default 
value, which is easier to understand. As this config is an internal 
experimental config, we don't mark it as deprecated.)

> Rename table.optimizer.union-all-as-breakpoint-disabled to 
> table.optimizer.union-all-as-breakpoint.enabled
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: FLINK-20322
>                 URL: https://issues.apache.org/jira/browse/FLINK-20322
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table SQL / API
>    Affects Versions: 1.12.0
>            Reporter: godfrey he
>            Assignee: godfrey he
>            Priority: Major
>             Fix For: 1.12.0
>
>
> {{table.optimizer.union-all-as-breakpoint-disabled}} is defined in 
> {{RelNodeBlockPlanBuilder}}  and is an internal experimental config. While 
> {{disabled}} and {{false}} (as default value) is very obscure.  I suggest to 
> change {{table.optimizer.union-all-as-breakpoint-disabled}} to 
> {{table.optimizer.union-all-as-breakpoint-enabled}} and use {{true}} as 
> default value, which is easier to understand. As this config is an internal 
> experimental config, we don't mark it as deprecated.



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