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https://issues.apache.org/jira/browse/KAFKA-18902?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Schofield resolved KAFKA-18902.
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Resolution: Fixed
> Implement ShareConsumer option to throw on poll if there are unacked records
> ----------------------------------------------------------------------------
>
> Key: KAFKA-18902
> URL: https://issues.apache.org/jira/browse/KAFKA-18902
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Andrew Schofield
> Assignee: Shivsundar R
> Priority: Major
> Fix For: 4.1.0
>
>
> Currently, an application using explicit acknowledgement which neglects to
> acknowledge all of the records received from calling `poll(Duration)` is
> re-presented with the records on the next call to poll. This has been shown
> to be confusing.
> An option will be added, `share.acknowledgement.mode=explicit` to throw an
> exception on poll instead.
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