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https://issues.apache.org/jira/browse/TOMEE-1622?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Romain Manni-Bucau updated TOMEE-1622:
--------------------------------------
    Fix Version/s:     (was: 7.0.0-M3)
                   7.0.0-M4

> TomEE SystemInstance unsafely iterates over the System.getProperties()
> ----------------------------------------------------------------------
>
>                 Key: TOMEE-1622
>                 URL: https://issues.apache.org/jira/browse/TOMEE-1622
>             Project: TomEE
>          Issue Type: Bug
>    Affects Versions: 1.7.2
>         Environment: Linux
>            Reporter: Kasun Gajasinghe
>             Fix For: 1.7.4, 7.0.0-M4
>
>
> This is discussed @tomee-dev 
> http://tomee-openejb.979440.n4.nabble.com/TomEE-SystemInstance-unsafely-iterates-over-the-System-getProperties-td4675732.html
> We've been seeing the following exception [2] in an instance where we have 
> extended TomEE 1.7.2. We have debugged the issue, and it seems to have 
> occurred since TomEE iterate over the System.getProperties() hashtable [1]. 
> It's possible that other threads might be using the system properties which 
> could lead to ConcurrentModificationException.
> Best way fix thing would to create a clone of the system properties, and use 
> that clone to iterate. There are issues reported for unsafe iterating of 
> system properties in other projects as seen in [3].
> Can we get this fixed in TomEE 1.7.3?
> [1] 
> https://github.com/apache/tomee/blob/tomee-1.7.x/container/openejb-loader/src/main/java/org/apache/openejb/loader/SystemInstance.java#L71
> [2]
> org.apache.openejb.loader.LoaderRuntimeException: Failed to create default 
> instance of SystemInstance
> at org.apache.openejb.loader.SystemInstance.reset(SystemInstance.java:280)
> at org.apache.openejb.loader.SystemInstance.<clinit>(SystemInstance.java:265)
> ... 9 more
> Caused by: java.util.ConcurrentModificationException
> at java.util.Hashtable$Enumerator.next(Hashtable.java:1167)
> at org.apache.openejb.loader.SystemInstance.<init>(SystemInstance.java:71)
> at org.apache.openejb.loader.SystemInstance.reset(SystemInstance.java:277)
> ... 10 more
> [3] 
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=469706
> https://liquibase.jira.com/browse/CORE-2104



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