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Re: Not able to connect to bootstrap server when one broker down

Please check your ISR using describe command and see if there is leader
available when one of the broker is down .

Thanks and Regards,
Rohit

On Tue, Aug 25, 2020, 20:20 Prateek Rajput
<prateek.rajput@flipkart.com.invalid> wrote:

> Hi, please if anyone can help, will be a huge favor.
>
> *Regards,*
> *Prateek Rajput* <prateek.rajput@flipkart.com>
>
>
> On Tue, Aug 25, 2020 at 12:06 AM Prateek Rajput <
> prateek.rajput@flipkart.com>
> wrote:
>
> > Hi everyone,
> > I am new to Kafka, and recently started working on kafka in my company.
> We
> > recently migrated our client and cluster from the *0.10.x* version to
> > *2.3.0*. I am facing this issue quite often.
> > I have provided all brokers in *bootstrap.servers* config to instantiate
> > the producer client but while using this client for batch publishing,
> > sometimes some of my mappers get stuck.
> > I debugged and found that one broker was down (for some maintenance
> > activity). Now it was getting stuck because the mapper's client was
> trying
> > to connect to that node only for the very first time. And it was failing
> > with NoRouteToHost Exception.
> > I have read that the very first time the client will select a random
> > broker and will try to connect with that broker to get the meta-data of
> the
> > whole cluster. Is there any way so that on such exceptions it can switch
> to
> > another node dynamically and should not try to connect to the same box
> > again and again.
> >
> > *Regards,*
> > *Prateek Rajput* <prateek.rajput@flipkart.com>
> >
>
> --
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