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https://issues.apache.org/jira/browse/AMQ-5849?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Feingold resolved AMQ-5849.
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Resolution: Not A Problem
False alarm
> MQTT Connection stealing causes resource leak
> ---------------------------------------------
>
> Key: AMQ-5849
> URL: https://issues.apache.org/jira/browse/AMQ-5849
> Project: ActiveMQ
> Issue Type: Bug
> Components: MQTT
> Affects Versions: 5.12.0
> Environment: Win2012 6GB allocated for JVM, 4 CPU
> Reporter: Michael Feingold
>
> The problem manifests itself when a big number of connections tries to
> re-establish the connection. Here is the scenario:
> 1. A client creates 10000 MQTT connections.
> 2. The server is cut off the client using the firewall on the server
> 3. Wait a couple of minutes to let the server close all connections
> 4. Restore the network connectivity
> after some time the connections seem to be reconnected, but we observe
> connection thrashing - the client reports that some of the connection is
> lost, and the server reports that it is stealing connection as the client
> reconnects. This process keeps happening continuously and as it happens the
> number of threads keeps growing into 10000 and more.
> If the connection stealing is disabled, the number of threads remains in low
> 100s.
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