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Posted to jira@kafka.apache.org by "Richard Yu (JIRA)" <ji...@apache.org> on 2019/05/30 22:52:00 UTC

[jira] [Commented] (KAFKA-3539) KafkaProducer.send() may block even though it returns the Future

    [ https://issues.apache.org/jira/browse/KAFKA-3539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16852428#comment-16852428 ] 

Richard Yu commented on KAFKA-3539:
-----------------------------------

[~radai] I don't know if this problem is resolved or not. Issue 6705 was closed because it was thought any changes made would be too complex to fix this behavioral issue.

> KafkaProducer.send() may block even though it returns the Future
> ----------------------------------------------------------------
>
>                 Key: KAFKA-3539
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3539
>             Project: Kafka
>          Issue Type: Bug
>          Components: producer 
>            Reporter: Oleg Zhurakousky
>            Priority: Critical
>              Labels: needs-discussion, needs-kip
>
> You can get more details from the users@kafka.apache.org by searching on the thread with the subject "KafkaProducer block on send".
> The bottom line is that method that returns Future must never block, since it essentially violates the Future contract as it was specifically designed to return immediately passing control back to the user to check for completion, cancel etc.



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