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https://issues.apache.org/jira/browse/NIFI-15389?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Handermann resolved NIFI-15389.
-------------------------------------
    Fix Version/s: 2.8.0
         Assignee: Bob Paulin
       Resolution: Fixed

> Ensure DBCPConnectionPool Deregisters Drivers that load on class load
> ---------------------------------------------------------------------
>
>                 Key: NIFI-15389
>                 URL: https://issues.apache.org/jira/browse/NIFI-15389
>             Project: Apache NiFi
>          Issue Type: Bug
>            Reporter: Bob Paulin
>            Assignee: Bob Paulin
>            Priority: Major
>             Fix For: 2.8.0
>
>          Time Spent: 1.5h
>  Remaining Estimate: 0h
>
> Drivers that register themselves such as Postgresql need to be deregistered 
> on remove.  These Drivers will be loaded by the InstanceClassLoader that 
> loads the DBCPConnectionPool so we should only deregister the ones that are 
> loaded by the same classloader.  This will allow these instances as well as 
> the classes that were used to load them to be garbage collected



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