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[eclipselink-users] Threads waiting indefinitely in ConcurrencyManager.

Hello,

 

We have been using eclipselink 1.0 (Old application) for application development using JPA. For few days when we are executing performance tests for the application, we are observing threads waiting on object monitor at ConcurrencyManager. The thread stack shows

 

"ajp-145.245.142.25-8309-79" daemon prio=6 tid=0x0000000008961800 nid=0x1818 in Object.wait() [0x000000001afbd000]

   java.lang.Thread.State: WAITING (on object monitor)

at java.lang.Object.wait(Native Method)

- waiting on <0x00000000a3e60fe8> (a org.eclipse.persistence.internal.helper.ConcurrencyManager)

at java.lang.Object.wait(Object.java:485)

at org.eclipse.persistence.internal.helper.ConcurrencyManager.acquire(ConcurrencyManager.java:89)

- locked <0x00000000a3e60fe8> (a org.eclipse.persistence.internal.helper.ConcurrencyManager)

at org.eclipse.persistence.internal.helper.ConcurrencyManager.acquire(ConcurrencyManager.java:75)

at org.eclipse.persistence.internal.sequencing.SequencingManager.acquireLock(SequencingManager.java:279)

at org.eclipse.persistence.internal.sequencing.SequencingManager$Preallocation_NoTransaction_State.getNextValue(SequencingManager.java:590)

at org.eclipse.persistence.internal.sequencing.SequencingManager.getNextValue(SequencingManager.java:884)

at org.eclipse.persistence.internal.sequencing.ClientSessionSequencing.getNextValue(ClientSessionSequencing.java:86)

at org.eclipse.persistence.internal.descriptors.ObjectBuilder.assignSequenceNumber(ObjectBuilder.java:258)

at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.assignSequenceNumber(UnitOfWorkImpl.java:405)

at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNotRegisteredNewObjectForPersist(UnitOfWorkImpl.java:3879)

at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.registerNotRegisteredNewObjectForPersist(RepeatableWriteUnitOfWork.java:369)

at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:3827)

- locked <0x00000000fde013a8> (a org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork)

at org.eclipse.persistence.internal.jpa.EntityManagerImpl.persist(EntityManagerImpl.java:219)

at com.arisglobal.framework.services.audittrail.AuditTrailServiceImpl.saveAuditTrail(AuditTrailServiceImpl.java:40)

 

I saw a similar bug fixed in eclipselink 1.2.1 release. However since we are using quite older version (not feasible to upgrade to the latest version due to application production release date) I was not sure how we can apply the patch to the eclipselink.

 

Would appreciate any help regarding this.

 

Thanks,
Shashi



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