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https://issues.apache.org/jira/browse/KAFKA-13927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17585652#comment-17585652
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Jordan Bull commented on KAFKA-13927:
-------------------------------------

I've also encountered this. This is especially problematic when the stream is 
bursty and the last batch of messages encounters a RetriableException. In such 
a case, the offsets will never be committed resulting in sustained lag.

 

Proposed fix in 
https://github.com/apache/kafka/pull/12566/commits/109ad70e20206cc82ebb155776b42e547cdd243d

> Kafka Connect Sink Connector Success after RetriableException, no commit 
> offset to remote.
> ------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-13927
>                 URL: https://issues.apache.org/jira/browse/KAFKA-13927
>             Project: Kafka
>          Issue Type: Bug
>          Components: KafkaConnect
>    Affects Versions: 2.8.0
>            Reporter: gj choi
>            Priority: Minor
>
> I made a custom SinkConnector.
> and I set retries with RetriableException.
>  
> In normal case, successfully offset commited with no LAG.
> but one or more RetriableException occured and then, retry make success
> there are LAG about sucess record, despite the retry success.
>  



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