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https://issues.apache.org/jira/browse/QPID-6539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14540125#comment-14540125
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ASF subversion and git services commented on QPID-6539:
-------------------------------------------------------
Commit 1678993 from [email protected] in branch 'java/trunk'
[ https://svn.apache.org/r1678993 ]
QPID-6539: Force loading of RepParams class before EnvironmentFacade creation
in order to avoid throwing of CME on Environment creation
when BDB HA VHN is activated at the same time causing loading of
RepParams class and modification of EnvironmentParams.SUPPORTED_PARAMS
> [Java Broker] ConcurrentModificationException can occur in
> StandardEnvironmentFacadeFactory.buildEnvironmentConfiguration on BDB VH
> start-up causing the ERRORED state of the object
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: QPID-6539
> URL: https://issues.apache.org/jira/browse/QPID-6539
> Project: Qpid
> Issue Type: Bug
> Affects Versions: 0.22, 0.24, 0.26, 0.28, 0.30, 0.32
> Reporter: Alex Rudyy
> Assignee: Alex Rudyy
> Fix For: 6.0 [Java]
>
>
> On a number of broker startups ConcurrentModificationException was thrown
> from StandardEnvironmentFacadeFactory.buildEnvironmentConfiguration in
> sporadic manner. In result of it, the affected VH fails to start and transits
> into ERRORED state.
> The exception stack trace is below
> {noformat}
> java.util.ConcurrentModificationException
> at java.util.HashMap$HashIterator.nextEntry(HashMap.java:922)
> at java.util.HashMap$ValueIterator.next(HashMap.java:950)
> at
> org.apache.qpid.server.store.berkeleydb.StandardEnvironmentFacadeFactory.buildEnvironmentConfiguration(StandardEnvironmentFacadeFactory.java:71)
> at
> org.apache.qpid.server.store.berkeleydb.StandardEnvironmentFacadeFactory.access$000(StandardEnvironmentFacadeFactory.java:34)
> at
> org.apache.qpid.server.store.berkeleydb.StandardEnvironmentFacadeFactory$1.getParameters(StandardEnvironmentFacadeFactory.java:60)
> at
> org.apache.qpid.server.store.berkeleydb.StandardEnvironmentFacade.<init>(StandardEnvironmentFacade.java:86)
> at
> org.apache.qpid.server.store.berkeleydb.StandardEnvironmentFacadeFactory.createEnvironmentFacade(StandardEnvironmentFacadeFactory.java:64)
> at
> org.apache.qpid.server.store.berkeleydb.BDBMessageStore.openMessageStore(BDBMessageStore.java:80)
> at
> org.apache.qpid.server.virtualhost.AbstractVirtualHost.onActivate(AbstractVirtualHost.java:1616)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at
> org.apache.qpid.server.model.AbstractConfiguredObject.attainState(AbstractConfiguredObject.java:1165)
> at
> org.apache.qpid.server.model.AbstractConfiguredObject$7.run(AbstractConfiguredObject.java:812)
> at
> org.apache.qpid.server.model.AbstractConfiguredObject$ChildCounter.decrementCount(AbstractConfiguredObject.java:564)
> at
> org.apache.qpid.server.model.AbstractConfiguredObject.doAttainState(AbstractConfiguredObject.java:878)
> at
> org.apache.qpid.server.model.AbstractConfiguredObject.access$300(AbstractConfiguredObject.java:88)
> at
> org.apache.qpid.server.model.AbstractConfiguredObject$1.call(AbstractConfiguredObject.java:476)
> at
> org.apache.qpid.server.model.AbstractConfiguredObject$1.call(AbstractConfiguredObject.java:463)
> at
> org.apache.qpid.server.model.AbstractConfiguredObject$2.execute(AbstractConfiguredObject.java:506)
> at
> org.apache.qpid.server.model.AbstractConfiguredObject$2.execute(AbstractConfiguredObject.java:499)
> at
> org.apache.qpid.server.configuration.updater.TaskExecutorImpl.executeTask(TaskExecutorImpl.java:318)
> at
> org.apache.qpid.server.configuration.updater.TaskExecutorImpl.access$600(TaskExecutorImpl.java:45)
> at
> org.apache.qpid.server.configuration.updater.TaskExecutorImpl$CallableWrapper$1.run(TaskExecutorImpl.java:346)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:356)
> at
> org.apache.qpid.server.configuration.updater.TaskExecutorImpl$CallableWrapper.call(TaskExecutorImpl.java:341)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
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