Re: [eclipselink-dev] STUCK Threads + @Transient behaviour

["Singh, Mejar" <mejar.singh@xxxxxxxxxx>]

Hi

 

I suspect the problem to be related to cyclic relations, any advice on how to deal with cyclic relations in JPA ?

We have two entites A and B, where B has ManytoOne relation to B – and in the code we have that we go from A->B and then afterwards from B->A on the ManytoOne relation

 

Regards

Mejar

 

From: Singh, Mejar
Sent: 8. marts 2012 15:06
To: 'eclipselink-dev@xxxxxxxxxxx'
Subject: STUCK Threads + @Transient behaviour

 

Hi

 

We get STUCK threads, so would like to know if a JPA entity with:

 

@Transient

@XmlTransient

public boolean isExportEntity() {

return exportEntity;

}

 

when calling:

public void setExportEntity(boolean exportEntity) {

this.exportEntity = exportEntity;

}

 

will this entity be locked in the L2 cache if we call setExportEntity ?

 

our log is:

 

 

]", which is more than the configured time (StuckThreadMaxTime) of "600"

seconds. Stack trace:

Thread-2281 "[STUCK] ExecuteThread: '340' for queue: 'weblogic.kernel.Default

(self-tuning)'" <alive, suspended, sleeping, priority=1, DAEMON> {

    java.lang.Thread.sleep(Thread.java:???)

  

org.eclipse.persistence.internal.helper.ConcurrencyManager.releaseDeferredLock(ConcurrencyManager.java:429)

  

org.eclipse.persistence.internal.identitymaps.CacheKey.releaseDeferredLock(CacheKey.java:348)

  

org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:660)

  

org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildWorkingCopyCloneNormally(ObjectBuilder.java:587)

 

 

]", which is more than the configured time (StuckThreadMaxTime) of "600"

seconds. Stack trace:

Thread-2287 "[STUCK] ExecuteThread: '346' for queue: 'weblogic.kernel.Default

(self-tuning)'" <alive, suspended, blocked, priority=1, DAEMON> {

    -- Blocked trying to get lock: java.util.Vector@19ddf650[fat lock]

    java.util.Vector$1.nextElement(Vector.java:300)

  

org.eclipse.persistence.internal.helper.ConcurrencyManager.isBuildObjectOnThreadComplete(ConcurrencyManager.java:347)

  

org.eclipse.persistence.internal.helper.ConcurrencyManager.isBuildObjectOnThreadComplete(ConcurrencyManager.java:347)

 

Reproducible: Sometimes

 

 

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