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https://issues.apache.org/jira/browse/KAFKA-9314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17132822#comment-17132822
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Randall Hauch commented on KAFKA-9314:
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This seems at least related to 
[KIP-610|https://cwiki.apache.org/confluence/display/KAFKA/KIP-610%3A+Error+Reporting+in+Sink+Connectors].
 [~nigel.liang], would you mind taking a look and considering whether that 
change would handle the request here? If not, then would this potentially need 
a KIP to alter the retry behavior? (If so, we need to add the `needs-kip` 
label.)

> Connect put() and poll() retries not conforming to KIP-298
> ----------------------------------------------------------
>
>                 Key: KAFKA-9314
>                 URL: https://issues.apache.org/jira/browse/KAFKA-9314
>             Project: Kafka
>          Issue Type: Bug
>          Components: KafkaConnect
>            Reporter: Nigel Liang
>            Assignee: Nigel Liang
>            Priority: Major
>
> KIP-298 outlines the retry policy of Connect when errors are encountered. In 
> particular, it proposes to retry on {{RetriableException}} on put() in 
> SinkTask and poll() in SourceTask.
> However, the code does not reflect this change. For instance, 
> WorkerSourceTask handles {{RetriableException}} thrown from {{poll()}} by 
> entering into a tight retry loop without backoff. This has led to connectors 
> having to workaround by simply not retrying and failing the task always. 
> Users would need to manually restart the task to recover from even simple 
> network glitches.
> AFAICT from reading code, the same is true for {{WorkerSinkTask}} when 
> calling {{put()}}.



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