[jira] [Resolved] (KAFKA-18829) Can't use explicit ack when poll returns an empty batch

["Shivsundar R (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-18829?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shivsundar R resolved KAFKA-18829.
----------------------------------
    Resolution: Fixed

> Can't use explicit ack when poll returns an empty batch
> -------------------------------------------------------
>
>                 Key: KAFKA-18829
>                 URL: https://issues.apache.org/jira/browse/KAFKA-18829
>             Project: Kafka
>          Issue Type: Sub-task
>            Reporter: Gunnar Morling
>            Assignee: Shivsundar R
>            Priority: Major
>
> I am getting the following exception when trying to acknowledge a message with a share consumer and poll returns an empty batch of messages:
>  
> {code:java}
> Exception in thread "main" java.lang.IllegalStateException: Implicit acknowledgement of delivery is being used.
> at org.apache.kafka.clients.consumer.internals.ShareConsumerImpl.ensureExplicitAcknowledgement(ShareConsumerImpl.java:1053)
> at org.apache.kafka.clients.consumer.internals.ShareConsumerImpl.acknowledge(ShareConsumerImpl.java:681)
> at org.apache.kafka.clients.consumer.KafkaShareConsumer.acknowledge(KafkaShareConsumer.java:535)
> {code}
>  
> This is as of commit 385b7ad3557196f8e84b34cc536f6dd2ac1fd502.



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