Hi Manoj,
Thanks but we caught the issue, it was coming most probably because the
wrong jar was being picked up from hdfs and was being set in oozie
classpath at runtime. In our code, kafka-client is on 2.3 but while running
MR job 0.8.2.0 jar was being picked up. We caught it after seeing the
producer client logs in our application, kafka-client version was
different there.
After removing that old jar, we have not observed this issue since.
*Regards,*
*Prateek Rajput* <prateek.rajput@flipkart.com>
On Wed, Aug 26, 2020 at 9:55 AM <Manoj.Agrawal2@cognizant.com> wrote:
> What error you are getting , can you share the exact error ?
> What is version of kafka lib at client side ?
>
> On 8/25/20, 7:50 AM, "Prateek Rajput" <prateek.rajput@flipkart.com.INVALID>
> wrote:
>
> [External]
>
>
> 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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****
*Any views or opinions presented in this
email are solely those of the author and do not necessarily represent those
of the organization. Any information on shares, debentures or similar
instruments, recommended product pricing, valuations and the like are for
information purposes only. It is not meant to be an instruction or
recommendation, as the case may be, to buy or to sell securities, products,
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unless specifically stated to be so on behalf of the Flipkart group.
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Any such communication is contrary to organizational policy and outside the
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_-----------------------------------------------------------------------------------------_
Thanks but we caught the issue, it was coming most probably because the
wrong jar was being picked up from hdfs and was being set in oozie
classpath at runtime. In our code, kafka-client is on 2.3 but while running
MR job 0.8.2.0 jar was being picked up. We caught it after seeing the
producer client logs in our application, kafka-client version was
different there.
After removing that old jar, we have not observed this issue since.
*Regards,*
*Prateek Rajput* <prateek.rajput@flipkart.com>
On Wed, Aug 26, 2020 at 9:55 AM <Manoj.Agrawal2@cognizant.com> wrote:
> What error you are getting , can you share the exact error ?
> What is version of kafka lib at client side ?
>
> On 8/25/20, 7:50 AM, "Prateek Rajput" <prateek.rajput@flipkart.com.INVALID>
> wrote:
>
> [External]
>
>
> 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>
> >
>
> --
>
>
>
>
> *-----------------------------------------------------------------------------------------*
>
>
> *This email and any files transmitted with it are confidential and
> intended solely for the use of the individual or entity to whom they
> are
> addressed. If you have received this email in error, please notify the
> system manager. This message contains confidential information and is
> intended only for the individual named. If you are not the named
> addressee,
> you should not disseminate, distribute or copy this email. Please
> notify
> the sender immediately by email if you have received this email by
> mistake
> and delete this email from your system. If you are not the intended
> recipient, you are notified that disclosing, copying, distributing or
> taking any action in reliance on the contents of this information is
> strictly prohibited.*****
>
> ****
>
> *Any views or opinions presented in this
> email are solely those of the author and do not necessarily represent
> those
> of the organization. Any information on shares, debentures or similar
> instruments, recommended product pricing, valuations and the like are
> for
> information purposes only. It is not meant to be an instruction or
> recommendation, as the case may be, to buy or to sell securities,
> products,
> services nor an offer to buy or sell securities, products or services
> unless specifically stated to be so on behalf of the Flipkart group.
> Employees of the Flipkart group of companies are expressly required
> not to
> make defamatory statements and not to infringe or authorise any
> infringement of copyright or any other legal right by email
> communications.
> Any such communication is contrary to organizational policy and
> outside the
> scope of the employment of the individual concerned. The organization
> will
> not accept any liability in respect of such communication, and the
> employee
> responsible will be personally liable for any damages or other
> liability
> arising.*****
>
> ****
>
> *Our organization accepts no liability for the
> content of this email, or for the consequences of any actions taken on
> the
> basis of the information *provided,* unless that information is
> subsequently confirmed in writing. If you are not the intended
> recipient,
> you are notified that disclosing, copying, distributing or taking any
> action in reliance on the contents of this information is strictly
> prohibited.*
>
>
>
> _-----------------------------------------------------------------------------------------_
>
>
>
> This e-mail and any files transmitted with it are for the sole use of the
> intended recipient(s) and may contain confidential and privileged
> information. If you are not the intended recipient(s), please reply to the
> sender and destroy all copies of the original message. Any unauthorized
> review, use, disclosure, dissemination, forwarding, printing or copying of
> this email, and/or any action taken in reliance on the contents of this
> e-mail is strictly prohibited and may be unlawful. Where permitted by
> applicable law, this e-mail and other e-mail communications sent to and
> from Cognizant e-mail addresses may be monitored.
> This e-mail and any files transmitted with it are for the sole use of the
> intended recipient(s) and may contain confidential and privileged
> information. If you are not the intended recipient(s), please reply to the
> sender and destroy all copies of the original message. Any unauthorized
> review, use, disclosure, dissemination, forwarding, printing or copying of
> this email, and/or any action taken in reliance on the contents of this
> e-mail is strictly prohibited and may be unlawful. Where permitted by
> applicable law, this e-mail and other e-mail communications sent to and
> from Cognizant e-mail addresses may be monitored.
>
--
*-----------------------------------------------------------------------------------------*
*This email and any files transmitted with it are confidential and
intended solely for the use of the individual or entity to whom they are
addressed. If you have received this email in error, please notify the
system manager. This message contains confidential information and is
intended only for the individual named. If you are not the named addressee,
you should not disseminate, distribute or copy this email. Please notify
the sender immediately by email if you have received this email by mistake
and delete this email from your system. If you are not the intended
recipient, you are notified that disclosing, copying, distributing or
taking any action in reliance on the contents of this information is
strictly prohibited.*****
****
*Any views or opinions presented in this
email are solely those of the author and do not necessarily represent those
of the organization. Any information on shares, debentures or similar
instruments, recommended product pricing, valuations and the like are for
information purposes only. It is not meant to be an instruction or
recommendation, as the case may be, to buy or to sell securities, products,
services nor an offer to buy or sell securities, products or services
unless specifically stated to be so on behalf of the Flipkart group.
Employees of the Flipkart group of companies are expressly required not to
make defamatory statements and not to infringe or authorise any
infringement of copyright or any other legal right by email communications.
Any such communication is contrary to organizational policy and outside the
scope of the employment of the individual concerned. The organization will
not accept any liability in respect of such communication, and the employee
responsible will be personally liable for any damages or other liability
arising.*****
****
*Our organization accepts no liability for the
content of this email, or for the consequences of any actions taken on the
basis of the information *provided,* unless that information is
subsequently confirmed in writing. If you are not the intended recipient,
you are notified that disclosing, copying, distributing or taking any
action in reliance on the contents of this information is strictly
prohibited.*
_-----------------------------------------------------------------------------------------_
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