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From "Jay Kreps (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-3824) Docs indicate auto.commit breaks at least once delivery but that is incorrect
Date Wed, 22 Jun 2016 15:41:58 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-3824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15344548#comment-15344548
] 

Jay Kreps commented on KAFKA-3824:
----------------------------------

[~beez] Sorry for not following up sooner. I think the reason for re-assigning was probably
that writing a complete description of the behavior in JIRA is the same difficulty as just
editing the javadoc directly.

I do think the description in the issue is fairly complete: The docs indicate that we violate
at-least once delivery when auto commit is enabled, but as of 0.10 we actually don't (i.e.
our consumer delivery guarantees are stronger than indicated in the javadoc). I'm not sure
there is anything else to add to the description.

In any case, sorry, we could probably have handled it more gracefully!

> Docs indicate auto.commit breaks at least once delivery but that is incorrect
> -----------------------------------------------------------------------------
>
>                 Key: KAFKA-3824
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3824
>             Project: Kafka
>          Issue Type: Improvement
>          Components: consumer
>    Affects Versions: 0.10.0.0
>            Reporter: Jay Kreps
>            Assignee: Jason Gustafson
>              Labels: newbie
>             Fix For: 0.10.1.0, 0.10.0.1
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> The javadocs for the new consumer indicate that auto commit breaks at least once delivery.
This is no longer correct as of 0.10. 
> http://kafka.apache.org/0100/javadoc/index.html?org/apache/kafka/clients/consumer/KafkaConsumer.html



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