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https://issues.apache.org/jira/browse/FLINK-17411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17093369#comment-17093369
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Jark Wu commented on FLINK-17411:
---------------------------------

Thanks [[email protected]] for creating this issue. There is already an 
ongoing issue to support async lookup for JDBC FLINK-14902. Let's move 
discussion there. Will close this one. 

> Add async mode in JDBCLookupFunction
> ------------------------------------
>
>                 Key: FLINK-17411
>                 URL: https://issues.apache.org/jira/browse/FLINK-17411
>             Project: Flink
>          Issue Type: Improvement
>          Components: Connectors / JDBC
>    Affects Versions: 1.10.0
>            Reporter: Simon Tao
>            Priority: Major
>
> At the moment,JDBCLookupFunction only support sync mode, in some scenarios we 
> need to use asynchrony to improve performance. We should suppot it in 
> JDBCLookupFunction
>  
> cc [~jark] [~twalthr]



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