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From "Michael Feingold (JIRA)" <>
Subject [jira] [Commented] (AMQ-5762) Severe memory leak in the MQTT connector
Date Mon, 11 May 2015 19:56:01 GMT


Michael Feingold commented on AMQ-5762:

Well I am not sure what to tell you. In my case it is clearly a leak - every measure of the
heap level I take I do so after forcing GC manually through the JConsole - several times.
What platform you are running this on? I ran my tests on Mac OS. I will re run them on the

Any chance we can do a webex so that I would share my setup with you?

I really need to get to the bottom of this. We do have a memory leak in our prod - that's
why we started 

> Severe memory leak in the MQTT connector
> ----------------------------------------
>                 Key: AMQ-5762
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: MQTT
>    Affects Versions: 5.10.1, 5.10.2, 5.11.0, 5.11.1
>            Reporter: Michael Feingold
>            Assignee: Timothy Bish
>            Priority: Critical
> When an MQTT connection is closed some memory is not released. In case of the soft close
(calling connection close on the client) memory leaks at the rate of 70K per connection close.
In case of the hard close (pulling the wire, or cutting off the network connection) the leak
goes at the rate of 300K per close. we also checked it on version 5.11 - same problem

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