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From "clebert suconic (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (ARTEMIS-1902) Message redistribution is not stopped when consumers count on remote node reaches 0 (AMQP)
Date Mon, 04 Jun 2018 14:27:00 GMT

     [ https://issues.apache.org/jira/browse/ARTEMIS-1902?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

clebert suconic closed ARTEMIS-1902.
------------------------------------
    Resolution: Fixed

> 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
>    Affects Versions: 2.5.0, 2.6.0
>            Reporter: Martyn Taylor
>            Assignee: Martyn Taylor
>            Priority: Critical
>             Fix For: 2.7.0, 2.6.1
>
>
> 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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