[jira] [Created] (OFBIZ-4335) Delegator creation fails with new ExecutionPool on trunk

[Nicolas Malin (Jira)]

Delegator creation fails with new ExecutionPool on trunk
--------------------------------------------------------

                 Key: OFBIZ-4335
                 URL: https://issues.apache.org/jira/browse/OFBIZ-4335
             Project: OFBiz
          Issue Type: Bug
          Components: framework
    Affects Versions: SVN trunk
            Reporter: Alexander Reelsen


he creation of the delegator done in GenericDelegator fails for me, when starting ofbiz or running run-install-exttest. This is the exception I am getting for each delegator

    [java] 2011-07-08 10:15:17,691 (ofbiz-config-2) [    GenericHelperFactory:62 :WARN ]
    [java] ---- exception report ----------------------------------------------------------
    [java] Exception: java.lang.ClassNotFoundException
    [java] Message: org.ofbiz.entity.datasource.GenericHelperDAO
    [java] ---- stack trace ---------------------------------------------------------------
    [java] java.lang.ClassNotFoundException: org.ofbiz.entity.datasource.GenericHelperDAO
    [java] java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    [java] java.security.AccessController.doPrivileged(Native Method)
    [java] java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    [java] java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    [java] java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    [java] org.ofbiz.entity.datasource.GenericHelperFactory.getHelper(GenericHelperFactory.java:60)
    [java] org.ofbiz.entity.GenericDelegator.initializeOneGenericHelper(GenericDelegator.java:268)
    [java] org.ofbiz.entity.GenericDelegator.access$000(GenericDelegator.java:89)
    [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:287)
    [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:285)
    [java] java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    [java] java.util.concurrent.FutureTask.run(FutureTask.java:138)
    [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
    [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
    [java] java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    [java] java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    [java] java.lang.Thread.run(Thread.java:680)
    [java] --------------------------------------------------------------------------------

When removing the ExecutionPool specific code which returns the Callable stuff from the GenericDelegator everything gets back to work, so there might be some problem.



Reply from doogie:

It's the Thread.currentThread().getContextClassLoader() call in
GenericHelperFactory that is broken.

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[Nicolas Malin (Jira)]

     [ https://issues.apache.org/jira/browse/OFBIZ-4335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Adam Heath reassigned OFBIZ-4335:
---------------------------------

    Assignee: Adam Heath

> Delegator creation fails with new ExecutionPool on trunk
> --------------------------------------------------------
>
>                 Key: OFBIZ-4335
>                 URL: https://issues.apache.org/jira/browse/OFBIZ-4335
>             Project: OFBiz
>          Issue Type: Bug
>          Components: framework
>    Affects Versions: SVN trunk
>            Reporter: Alexander Reelsen
>            Assignee: Adam Heath
>
> he creation of the delegator done in GenericDelegator fails for me, when starting ofbiz or running run-install-exttest. This is the exception I am getting for each delegator
>     [java] 2011-07-08 10:15:17,691 (ofbiz-config-2) [    GenericHelperFactory:62 :WARN ]
>     [java] ---- exception report ----------------------------------------------------------
>     [java] Exception: java.lang.ClassNotFoundException
>     [java] Message: org.ofbiz.entity.datasource.GenericHelperDAO
>     [java] ---- stack trace ---------------------------------------------------------------
>     [java] java.lang.ClassNotFoundException: org.ofbiz.entity.datasource.GenericHelperDAO
>     [java] java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>     [java] java.security.AccessController.doPrivileged(Native Method)
>     [java] java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>     [java] java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>     [java] java.lang.ClassLoader.loadClass(ClassLoader.java:248)
>     [java] org.ofbiz.entity.datasource.GenericHelperFactory.getHelper(GenericHelperFactory.java:60)
>     [java] org.ofbiz.entity.GenericDelegator.initializeOneGenericHelper(GenericDelegator.java:268)
>     [java] org.ofbiz.entity.GenericDelegator.access$000(GenericDelegator.java:89)
>     [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:287)
>     [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:285)
>     [java] java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>     [java] java.util.concurrent.FutureTask.run(FutureTask.java:138)
>     [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
>     [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
>     [java] java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     [java] java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     [java] java.lang.Thread.run(Thread.java:680)
>     [java] --------------------------------------------------------------------------------
> When removing the ExecutionPool specific code which returns the Callable stuff from the GenericDelegator everything gets back to work, so there might be some problem.
> Reply from doogie:
> It's the Thread.currentThread().getContextClassLoader() call in
> GenericHelperFactory that is broken.

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[Nicolas Malin (Jira)]

     [ https://issues.apache.org/jira/browse/OFBIZ-4335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Adam Heath updated OFBIZ-4335:
------------------------------

    Attachment: FixExecutionPoolThreadClassLoader.patch

> Delegator creation fails with new ExecutionPool on trunk
> --------------------------------------------------------
>
>                 Key: OFBIZ-4335
>                 URL: https://issues.apache.org/jira/browse/OFBIZ-4335
>             Project: OFBiz
>          Issue Type: Bug
>          Components: framework
>    Affects Versions: SVN trunk
>            Reporter: Alexander Reelsen
>            Assignee: Adam Heath
>         Attachments: FixExecutionPoolThreadClassLoader.patch
>
>
> he creation of the delegator done in GenericDelegator fails for me, when starting ofbiz or running run-install-exttest. This is the exception I am getting for each delegator
>     [java] 2011-07-08 10:15:17,691 (ofbiz-config-2) [    GenericHelperFactory:62 :WARN ]
>     [java] ---- exception report ----------------------------------------------------------
>     [java] Exception: java.lang.ClassNotFoundException
>     [java] Message: org.ofbiz.entity.datasource.GenericHelperDAO
>     [java] ---- stack trace ---------------------------------------------------------------
>     [java] java.lang.ClassNotFoundException: org.ofbiz.entity.datasource.GenericHelperDAO
>     [java] java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>     [java] java.security.AccessController.doPrivileged(Native Method)
>     [java] java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>     [java] java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>     [java] java.lang.ClassLoader.loadClass(ClassLoader.java:248)
>     [java] org.ofbiz.entity.datasource.GenericHelperFactory.getHelper(GenericHelperFactory.java:60)
>     [java] org.ofbiz.entity.GenericDelegator.initializeOneGenericHelper(GenericDelegator.java:268)
>     [java] org.ofbiz.entity.GenericDelegator.access$000(GenericDelegator.java:89)
>     [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:287)
>     [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:285)
>     [java] java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>     [java] java.util.concurrent.FutureTask.run(FutureTask.java:138)
>     [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
>     [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
>     [java] java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     [java] java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     [java] java.lang.Thread.run(Thread.java:680)
>     [java] --------------------------------------------------------------------------------
> When removing the ExecutionPool specific code which returns the Callable stuff from the GenericDelegator everything gets back to work, so there might be some problem.
> Reply from doogie:
> It's the Thread.currentThread().getContextClassLoader() call in
> GenericHelperFactory that is broken.

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[Nicolas Malin (Jira)]

    [ https://issues.apache.org/jira/browse/OFBIZ-4335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13062043#comment-13062043 ]

Adam Heath commented on OFBIZ-4335:
-----------------------------------

Please try the attached patch(which is far away from the actual code that was shown in your stack trace).  It applies to the current trunk(1144107).

> Delegator creation fails with new ExecutionPool on trunk
> --------------------------------------------------------
>
>                 Key: OFBIZ-4335
>                 URL: https://issues.apache.org/jira/browse/OFBIZ-4335
>             Project: OFBiz
>          Issue Type: Bug
>          Components: framework
>    Affects Versions: SVN trunk
>            Reporter: Alexander Reelsen
>            Assignee: Adam Heath
>         Attachments: FixExecutionPoolThreadClassLoader.patch
>
>
> he creation of the delegator done in GenericDelegator fails for me, when starting ofbiz or running run-install-exttest. This is the exception I am getting for each delegator
>     [java] 2011-07-08 10:15:17,691 (ofbiz-config-2) [    GenericHelperFactory:62 :WARN ]
>     [java] ---- exception report ----------------------------------------------------------
>     [java] Exception: java.lang.ClassNotFoundException
>     [java] Message: org.ofbiz.entity.datasource.GenericHelperDAO
>     [java] ---- stack trace ---------------------------------------------------------------
>     [java] java.lang.ClassNotFoundException: org.ofbiz.entity.datasource.GenericHelperDAO
>     [java] java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>     [java] java.security.AccessController.doPrivileged(Native Method)
>     [java] java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>     [java] java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>     [java] java.lang.ClassLoader.loadClass(ClassLoader.java:248)
>     [java] org.ofbiz.entity.datasource.GenericHelperFactory.getHelper(GenericHelperFactory.java:60)
>     [java] org.ofbiz.entity.GenericDelegator.initializeOneGenericHelper(GenericDelegator.java:268)
>     [java] org.ofbiz.entity.GenericDelegator.access$000(GenericDelegator.java:89)
>     [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:287)
>     [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:285)
>     [java] java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>     [java] java.util.concurrent.FutureTask.run(FutureTask.java:138)
>     [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
>     [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
>     [java] java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     [java] java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     [java] java.lang.Thread.run(Thread.java:680)
>     [java] --------------------------------------------------------------------------------
> When removing the ExecutionPool specific code which returns the Callable stuff from the GenericDelegator everything gets back to work, so there might be some problem.
> Reply from doogie:
> It's the Thread.currentThread().getContextClassLoader() call in
> GenericHelperFactory that is broken.

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[Nicolas Malin (Jira)]

    [ https://issues.apache.org/jira/browse/OFBIZ-4335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13068574#comment-13068574 ]

Alexander Reelsen commented on OFBIZ-4335:
------------------------------------------

Applying this patch worked as far as there were no exceptions on normal startup or running run-install-exttest.

> Delegator creation fails with new ExecutionPool on trunk
> --------------------------------------------------------
>
>                 Key: OFBIZ-4335
>                 URL: https://issues.apache.org/jira/browse/OFBIZ-4335
>             Project: OFBiz
>          Issue Type: Bug
>          Components: framework
>    Affects Versions: SVN trunk
>            Reporter: Alexander Reelsen
>            Assignee: Adam Heath
>         Attachments: FixExecutionPoolThreadClassLoader.patch
>
>
> he creation of the delegator done in GenericDelegator fails for me, when starting ofbiz or running run-install-exttest. This is the exception I am getting for each delegator
>     [java] 2011-07-08 10:15:17,691 (ofbiz-config-2) [    GenericHelperFactory:62 :WARN ]
>     [java] ---- exception report ----------------------------------------------------------
>     [java] Exception: java.lang.ClassNotFoundException
>     [java] Message: org.ofbiz.entity.datasource.GenericHelperDAO
>     [java] ---- stack trace ---------------------------------------------------------------
>     [java] java.lang.ClassNotFoundException: org.ofbiz.entity.datasource.GenericHelperDAO
>     [java] java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>     [java] java.security.AccessController.doPrivileged(Native Method)
>     [java] java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>     [java] java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>     [java] java.lang.ClassLoader.loadClass(ClassLoader.java:248)
>     [java] org.ofbiz.entity.datasource.GenericHelperFactory.getHelper(GenericHelperFactory.java:60)
>     [java] org.ofbiz.entity.GenericDelegator.initializeOneGenericHelper(GenericDelegator.java:268)
>     [java] org.ofbiz.entity.GenericDelegator.access$000(GenericDelegator.java:89)
>     [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:287)
>     [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:285)
>     [java] java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>     [java] java.util.concurrent.FutureTask.run(FutureTask.java:138)
>     [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
>     [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
>     [java] java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     [java] java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     [java] java.lang.Thread.run(Thread.java:680)
>     [java] --------------------------------------------------------------------------------
> When removing the ExecutionPool specific code which returns the Callable stuff from the GenericDelegator everything gets back to work, so there might be some problem.
> Reply from doogie:
> It's the Thread.currentThread().getContextClassLoader() call in
> GenericHelperFactory that is broken.

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[Nicolas Malin (Jira)]

    [ https://issues.apache.org/jira/browse/OFBIZ-4335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13068936#comment-13068936 ]

Martin Kreidenweis commented on OFBIZ-4335:
-------------------------------------------

I have an alternate, very simple patch:
{code}
Index: framework/base/src/org/ofbiz/base/concurrent/ExecutionPool.java
===================================================================
--- framework/base/src/org/ofbiz/base/concurrent/ExecutionPool.java (Revision 1144132)
+++ framework/base/src/org/ofbiz/base/concurrent/ExecutionPool.java (Arbeitskopie)
@@ -39,7 +39,7 @@
 @SourceMonitored
 public final class ExecutionPool {
     public static final String module = ExecutionPool.class.getName();
-    public static final ScheduledExecutorService GLOBAL_EXECUTOR = getExecutor(null, "ofbiz-config", -1, true);
+    public static final ScheduledExecutorService GLOBAL_EXECUTOR = getExecutor(null, "ofbiz-config", -1, false);
 
     protected static class ExecutionPoolThreadFactory implements ThreadFactory {
         private final ThreadGroup group;

{code}

The problem is indeed that the wrong class loader is used for the "ofbiz-config-*" threads ({{NativeLibClassLoader}} instead of {{CachedClassLoader}}). This happens when the threads are created by the static code in {{ExecutionPool.java}} when it is executed before the {{ClassLoaderContainer.init()}} initializes the {{CachedClassLoader}}.

This also causes other problems like: The local resolution of XML Schema files won't work any more because it's also using the wrong classloader, which can't find the XSD files:
{code}
[java] 2011-07-21 12:21:45,333 (ofbiz-config-0) [                 UtilXml:1022:WARN ] [UtilXml.LocalResolver.resolveEntity] could not find LOCAL DTD/Schema with publicId [null] and the file/resource is [service-eca.xsd]
{code}


You can trigger this behavior in current ofbiz trunk by setting an expire time for the properties cache in {{cache.properties}}
{code}
properties.UtilPropertiesResourceCache.expireTime=10000
{code}
The {{Debug.log()}} statements in the {{ContainerLoader}} then load the logging configuration properties file and cache it. If an expire time is set, the {{ExecutionPool}} is used and creates the "ofbiz-config-*" threads too early.

By not pre-starting the "ofbiz-config-*" threads in the static code (patch above), the threads are then created later on, when the "main" thread classloader has become the {{CachedClassLoader}} and everythings starts working again. :-)

> Delegator creation fails with new ExecutionPool on trunk
> --------------------------------------------------------
>
>                 Key: OFBIZ-4335
>                 URL: https://issues.apache.org/jira/browse/OFBIZ-4335
>             Project: OFBiz
>          Issue Type: Bug
>          Components: framework
>    Affects Versions: SVN trunk
>            Reporter: Alexander Reelsen
>            Assignee: Adam Heath
>         Attachments: FixExecutionPoolThreadClassLoader.patch
>
>
> he creation of the delegator done in GenericDelegator fails for me, when starting ofbiz or running run-install-exttest. This is the exception I am getting for each delegator
>     [java] 2011-07-08 10:15:17,691 (ofbiz-config-2) [    GenericHelperFactory:62 :WARN ]
>     [java] ---- exception report ----------------------------------------------------------
>     [java] Exception: java.lang.ClassNotFoundException
>     [java] Message: org.ofbiz.entity.datasource.GenericHelperDAO
>     [java] ---- stack trace ---------------------------------------------------------------
>     [java] java.lang.ClassNotFoundException: org.ofbiz.entity.datasource.GenericHelperDAO
>     [java] java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>     [java] java.security.AccessController.doPrivileged(Native Method)
>     [java] java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>     [java] java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>     [java] java.lang.ClassLoader.loadClass(ClassLoader.java:248)
>     [java] org.ofbiz.entity.datasource.GenericHelperFactory.getHelper(GenericHelperFactory.java:60)
>     [java] org.ofbiz.entity.GenericDelegator.initializeOneGenericHelper(GenericDelegator.java:268)
>     [java] org.ofbiz.entity.GenericDelegator.access$000(GenericDelegator.java:89)
>     [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:287)
>     [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:285)
>     [java] java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>     [java] java.util.concurrent.FutureTask.run(FutureTask.java:138)
>     [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
>     [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
>     [java] java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     [java] java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     [java] java.lang.Thread.run(Thread.java:680)
>     [java] --------------------------------------------------------------------------------
> When removing the ExecutionPool specific code which returns the Callable stuff from the GenericDelegator everything gets back to work, so there might be some problem.
> Reply from doogie:
> It's the Thread.currentThread().getContextClassLoader() call in
> GenericHelperFactory that is broken.

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[Nicolas Malin (Jira)]

    [ https://issues.apache.org/jira/browse/OFBIZ-4335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13114523#comment-13114523 ]

Martin Kreidenweis commented on OFBIZ-4335:
-------------------------------------------

Just checking up on the ticket status... :-)

Do you need more info or did you just not get around to applying the patch yet?

I still would suggest just disabling the pre-starting of the ofbiz-config threads. The code then behaves the same regardless whether the UtilPropertiesResourceCache timeout is set or not.

I don't think the ThreadWithClassLoader that Adam suggested is necessary.

> Delegator creation fails with new ExecutionPool on trunk
> --------------------------------------------------------
>
>                 Key: OFBIZ-4335
>                 URL: https://issues.apache.org/jira/browse/OFBIZ-4335
>             Project: OFBiz
>          Issue Type: Bug
>          Components: framework
>    Affects Versions: SVN trunk
>            Reporter: Alexander Reelsen
>            Assignee: Adam Heath
>         Attachments: FixExecutionPoolThreadClassLoader.patch
>
>
> he creation of the delegator done in GenericDelegator fails for me, when starting ofbiz or running run-install-exttest. This is the exception I am getting for each delegator
>     [java] 2011-07-08 10:15:17,691 (ofbiz-config-2) [    GenericHelperFactory:62 :WARN ]
>     [java] ---- exception report ----------------------------------------------------------
>     [java] Exception: java.lang.ClassNotFoundException
>     [java] Message: org.ofbiz.entity.datasource.GenericHelperDAO
>     [java] ---- stack trace ---------------------------------------------------------------
>     [java] java.lang.ClassNotFoundException: org.ofbiz.entity.datasource.GenericHelperDAO
>     [java] java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>     [java] java.security.AccessController.doPrivileged(Native Method)
>     [java] java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>     [java] java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>     [java] java.lang.ClassLoader.loadClass(ClassLoader.java:248)
>     [java] org.ofbiz.entity.datasource.GenericHelperFactory.getHelper(GenericHelperFactory.java:60)
>     [java] org.ofbiz.entity.GenericDelegator.initializeOneGenericHelper(GenericDelegator.java:268)
>     [java] org.ofbiz.entity.GenericDelegator.access$000(GenericDelegator.java:89)
>     [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:287)
>     [java] org.ofbiz.entity.GenericDelegator$1.call(GenericDelegator.java:285)
>     [java] java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>     [java] java.util.concurrent.FutureTask.run(FutureTask.java:138)
>     [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
>     [java] java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
>     [java] java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     [java] java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     [java] java.lang.Thread.run(Thread.java:680)
>     [java] --------------------------------------------------------------------------------
> When removing the ExecutionPool specific code which returns the Callable stuff from the GenericDelegator everything gets back to work, so there might be some problem.
> Reply from doogie:
> It's the Thread.currentThread().getContextClassLoader() call in
> GenericHelperFactory that is broken.

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