Ok thank you, I think I understand how it works now. Is this behavior
primarily characteristic of Kafka?

Thanks,
William

On Thu, Jun 28, 2018 at 12:37 PM, UNNAVA, SUNIL <[email protected]> wrote:

> In between the 2 REST subscribe calls with different consumer groups, if
> the producer publishes the messages to a topic, the 2nd REST call will
> not receive any messages as the 2nd consumer group is not subscribed to a
> Topic, before the producer publishes the messages. There is no change in
> the message received for any subsequent REST subscribe calls.
>
>
>
>
>
> Thanks,
>
> Sunil
>
>
>
> *From:* William Kurkian <[email protected]>
> *Sent:* Thursday, June 28, 2018 11:56 AM
> *To:* UNNAVA, SUNIL <[email protected]>
> *Cc:* [email protected]
> *Subject:* Re: [onap-discuss] [dmaap] DMaaP API
>
>
>
> Ok, let me see if I understand.
>
>
>
> I can subscribe to a topic with this REST call:  GET
> http(s)://{HOST:PORT}}/events/{topicname}/{consumegroup}/{
> consumerid}/{timeout=x}.
>
>
>
> Once the client gets a response with messages, they issue another REST
> call to wait for more.
>
> At the same time there is another client also issuing calls. Naturally,
> they are not issuing calls at the exact same time.
>
>
>
> Based on what I am seeing in my terminal, they may not both receive some
> messages if the other one has not received it, even if they use different
> consumer groups.
>
>
>
> Is there something I am not understanding in this ?
>
>
>
> Thanks,
>
> William
>

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