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Posted to issues@activemq.apache.org by "Martyn Taylor (JIRA)" <ji...@apache.org> on 2018/06/01 15:33:00 UTC

[jira] [Created] (ARTEMIS-1902) Message redistribution is not stopped when consumers count on remote node reaches 0 (AMQP)

Martyn Taylor created ARTEMIS-1902:
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             Summary: Message redistribution is not stopped when consumers count on remote node reaches 0 (AMQP)
                 Key: ARTEMIS-1902
                 URL: https://issues.apache.org/jira/browse/ARTEMIS-1902
             Project: ActiveMQ Artemis
          Issue Type: Bug
            Reporter: Martyn Taylor


With redistribution enabled and load balancing set to ON_DEMAND there is a case where a consumer count on a remote node reaches 0, however the local broker continues redistributing.  This can cause a whole magnitude of issues if the both brokers get in the same state.  Messages are redistributed back and forth between each other and never hit the local queue, resulting in message loss and potentially an OOM as each time the message is redistributed a copy is made.

The issue looks to be caused by the cluster getting into a state where consumer counts are below 0.  



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