Inconsistent view of queue

[Samkit Shah]

Hello,

We are facing strange problem. We have multiple producer storm topologies enqueuing to one queue. From this queue, another consumer storm topology consumes. We have noticed couple of times that views held by producer and some other consumer topologies and rest of consumers are different. 

Has somebody come across such problem ?

We have storm cluster at 1.1.1. and RabbitMQ at 3.5.3. We are using modified version of ppat/storm-rabbitmq package to support priority in our topology code.

Thanks,

Samkit  

[Michael Klishin]

Publishing and consumption are asynchronous. I'm afraid we cannot suggest much with the amount of information provided.

3.5.x has been out of support for over 1 year. Please consider moving to at least 3.6.15:

 * http://www.rabbitmq.com/changelog.html

 * http://www.rabbitmq.com/upgrade.html

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MK

Staff Software Engineer, Pivotal/RabbitMQ

[Samkit Shah]

I will try out new version and check whether this problem persists. What is recommended package/approach to use rabbitmq from Storm ? Do you have any some suggestions to consider?

On Mon, May 21, 2018 at 6:32 PM, Michael Klishin <mkli...@pivotal.io> wrote:

Publishing and consumption are asynchronous. I'm afraid we cannot suggest much with the amount of information provided.

3.5.x has been out of support for over 1 year. Please consider moving to at least 3.6.15:

 * http://www.rabbitmq.com/changelog.html

 * http://www.rabbitmq.com/upgrade.html

On Sun, May 20, 2018 at 5:09 AM, Samkit Shah <samk...@gmail.com> wrote:

Hello,

We are facing strange problem. We have multiple producer storm topologies enqueuing to one queue. From this queue, another consumer storm topology consumes. We have noticed couple of times that views held by producer and some other consumer topologies and rest of consumers are different. 

Has somebody come across such problem ?

We have storm cluster at 1.1.1. and RabbitMQ at 3.5.3. We are using modified version of ppat/storm-rabbitmq package to support priority in our topology code.

Thanks,

Samkit  

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MK

Staff Software Engineer, Pivotal/RabbitMQ

[Michael Klishin]

RabbitMQ doesn't know what its clients are. The most recent Java client is recommended but

I'd focus on upgrading and trying to define/reproduce what "an inconsistent view" means. It very well might

be a Storm consumer-producer interaction of some kind of a transient timing issue.