Hi Justin, We are using broker version 5.17.2. All our clients are mostly Java based applications except for one python based app. We have 3 active/standby pairs of Active MQ brokers connected in this fashion – broker 1 has duplex connections to both broker 2 and broker 3 , broker 2 has one duplex connection to broker 3. We have a load balancer in the front that directs traffic to these three brokers. We notice that there is only one active consumer at a time on either one of the three brokers and the remaining two brokers have no consumers (only has network connectors that connects them to the other broker).
This particular issue is only happening when messages are “redelivered” to a queue and the “JMXDeliveryCount” is more than 2. For example, lets say broker 3 has “redelivered” messages on queue X and then our app connects to broker 2, messages on broker 3 do not move to broker 2 (they just sit there and broker 2 does not receive any of the redelivered messages). However, after multiple attempts when our app finally connects to broker 3 (where redelivered messages are sitting), messages get consumed. This might not be a bigger issue for apps with multiple instances however we have apps with a single instance that could get affected by this issue. Please note that “messages” in the above paragraph refer to only “redelivered” messages. From: Justin Bertram <jbert...@apache.org> Date: Thursday, February 2, 2023 at 12:03 PM To: users@activemq.apache.org <users@activemq.apache.org> Subject: Re: Redelivered messages do not get transported to broker with consumers [You don't often get email from jbert...@apache.org. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] What version of the broker are you using? What kinds of clients are you using? How are your brokers configured? What is the distribution of consumers across the queues in the cluster? Justin On Thu, Feb 2, 2023 at 10:57 AM Haritha Desikan <hdesi...@spscommerce.com> wrote: > Hi, > > Our company recently decided to make a shift to Active MQ. Our > infrastructure currently uses a mesh of three active/standby broker pairs > and we have been facing an issue with the brokers where redelivered > messages sitting on a queue in one particular broker are not being > transported to the broker with active consumers on it. > > Please provide some guidance/insight as to what can be done in such > scenarios. > > Thank you, > Haritha > Cloud Systems Engineer > SPS Commerce > >
