[jira] [Updated] (FLINK-15475) Add isOutputTypeUsed() API to Transformation

["Rong Rong (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-15475?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rong Rong updated FLINK-15475:
------------------------------
    Description: 
Currently there's no way to "peek" into a `Transformation` object and see if `typeUsed` has been set or not. The only way is to invoke the `setOutputType` API and wrap around it with a try-catch block. 

It would be nice if we have a `isTypeUsed()` or `isOutputTypeUsed()` API to check whether a particular transformation has a definitive output type set / used or not.



  was:
Currently there's no way to "peek" into a Transformation and see if OutputType has been used or not. The only way is to invoke the {{setOutputType}} API and wrap around it with a try-catch block. 

It would be nice if we have a `isTypeUsed()` or `isOutputTypeUsed()` API to check whether a particular transformation has a definitive output type set / used or not.




> Add isOutputTypeUsed() API to Transformation
> --------------------------------------------
>
>                 Key: FLINK-15475
>                 URL: https://issues.apache.org/jira/browse/FLINK-15475
>             Project: Flink
>          Issue Type: Improvement
>          Components: API / Core, API / DataSet, API / DataStream
>            Reporter: Rong Rong
>            Assignee: Rong Rong
>            Priority: Minor
>
> Currently there's no way to "peek" into a `Transformation` object and see if `typeUsed` has been set or not. The only way is to invoke the `setOutputType` API and wrap around it with a try-catch block. 
> It would be nice if we have a `isTypeUsed()` or `isOutputTypeUsed()` API to check whether a particular transformation has a definitive output type set / used or not.



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