Re: Getting rid of Attempting to send response via channel for which there is no open connection

[Ted Yu <yu...@gmail.com>]

Have you seen this thread ?

http://search-hadoop.com/m/Kafka/uyzND1ppGvmNscWc?subj=Re+Data+loss+while+upgrading+confluent+3+0+0+kafka+cluster+to+confluent+3+2+2

On Thu, Nov 2, 2017 at 1:46 PM, Karim Lamouri <ka...@lamouri.me> wrote:

> Hi,
>
> I wanted to know in which cases those warning arise and how to reduce them
> (getting rid of them is even better):
>
> ~~~~
>  Attempting to send response via channel for which there is no open
> connection
> ~~~~
>
> I’m asking because I linked those warnings to data loss on my production
> cluster. Indeed that’s the only kind of warning I get within 20 minutes
> (+/-) of data loss (0.06% on a 20 nodes cluster).
>
> I’m running on Kafka 0.11.0.0 (confluent platform version) and my message
> format are set to 'log.message.format.version': ‘0.10.2'
>
> Any help or pointers is appreciated,
>
> Thanks,
>
> Karim
>
>