I can sometimes trigger this exception:
java.util.concurrent.RejectedExecutionException
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:1477)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:384)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:867)
at org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor.execute(ThreadPoolTaskExecutor.java:302)
at org.mule.galaxy.impl.event.AbstractDelegatingGalaxyEventListener.internalOnEvent(AbstractDelegatingGalaxyEventListener.java:108)
at org.mule.galaxy.impl.event.DelegatingSingleEventListener.onEvent(DelegatingSingleEventListener.java:38)
at org.mule.galaxy.impl.event.DefaultEventManager.fireEvent(DefaultEventManager.java:201)
at org.mule.galaxy.impl.jcr.AbstractJcrItem.setInternalProperty(AbstractJcrItem.java:179)
at org.mule.galaxy.impl.jcr.AbstractJcrItem.setInternalProperty(AbstractJcrItem.java:160)
I think the queue size just needs to be increased.