[jboss-jira] [JBoss JIRA] (AS7-6255) Memory leak caused by endless piling up of delete-on-exit hooks for JMX authentication challenges

[Taras Tielkes (JIRA)]

Taras Tielkes created AS7-6255:
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             Summary: Memory leak caused by endless piling up of delete-on-exit hooks for JMX authentication challenges
                 Key: AS7-6255
                 URL: https://issues.jboss.org/browse/AS7-6255
             Project: Application Server 7
          Issue Type: Bug
          Components: JMX
    Affects Versions: 7.1.1.Final
            Reporter: Taras Tielkes
            Assignee: Stuart Douglas


We're running 7.1.1, with a patch applied for REMJMX-45 to limit the worst leaks coming from the JMX subsystem.

However, even with this patch applied we can only survive for a few days in a production-like scenario.

Inspection of the out-of-memory heap dumps shows a large accumulation of entries inside {{java.io.DeleteOnExitHook}}, all having values like "{{C:\jars\jboss-as-7.1.1.Final\standalone\tmp\auth\challenge-4303257}}".

Given sufficient JMX connections made to a running instance of 7.1.1, this will at some point exhaust the JVM heap. Typically the paths will be longer than the example above, accelerating the process.

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