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https://issues.apache.org/jira/browse/FLINK-14442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16954803#comment-16954803
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Rong Rong commented on FLINK-14442:
-----------------------------------

Hi [~javadevmtl] sorry I misunderstood your intention in the mailing list. I 
thought you need to support some sort of customized combination flushing 
strategy that supports both batch size and interval.

yes. [~jark]  is right. I think the async flushing should achieved your goal if 
you would like a flush, for example exactly every 2sec, no matter how many msgs 
are inside the buffer (as long as it does not hit the batchInterval limit). 

> Add time based interval execution to JDBC connectors.
> -----------------------------------------------------
>
>                 Key: FLINK-14442
>                 URL: https://issues.apache.org/jira/browse/FLINK-14442
>             Project: Flink
>          Issue Type: Improvement
>          Components: Connectors / JDBC
>    Affects Versions: 1.8.0, 1.8.1, 1.8.2, 1.9.0
>            Reporter: None none
>            Priority: Minor
>
> Hi, currently the JDBC sink/output only supports batch interval execution. 
> For data to be streamed/committed to the JDBC database we need to wait for 
> the batch interval to be filled up.
> For example if you set a batch interval of 100 but only get 99 records then 
> no data will be committed to the database.
> The JDBC driver should maybe also have a time based interval so that data is 
> eventually pushed to the database.



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