Pof Serialization Error leads to partial cache updates in XA Tran

Question

I am using coherence jca adapter to enlist in XA transactions with the database operations. The data is being stored in distributed caches with the cache member running on weblogic server with "Storage disabled". POF is being used for serialization. As a part of a single transaction, multiple caches, which are obtained from the CacheAdapter, are being updated. The application code does explicit updates to the cache and the database within the same transaction with the write to the cache happening after the write the database has been executed.
It is being observed that when an exception happens during the serialization of an object all the cache updates prior to this error are not rolled back. Namely,
I have CacheA for Object A, Cache B for Object B and Cache C for Object C.
I am updating A, B, C with the same transaction and in the same order as the objects are listed. So database for A is updated followed by cache update for A, DataBase B is updated followed by Cache update for B and similarly for C.
If there is an error while serializing C, all the database updates are rolled back, however updates to A and B are committed to the cache.
Why aren't all the cache updates being rolled back ? Has this been fixed already in coherence 3.6.
Thanks,
Shamsur
Application Server: Weblogic 10.3
jdbc driver : XA thin driver
coherence : 3.5.0
Caused by: java.lang.IllegalStateException: decimal value exceeds IEEE754r 128-bit range: 7777777788888888888899999999999900000000000000044444444444447777777777777.00
at com.tangosol.io.pof.PofHelper.calcDecimalSize(PofHelper.java:1517)
at com.tangosol.io.pof.PofBufferWriter.writeBigDecimal(PofBufferWriter.java:562)
at com.tangosol.io.pof.PofBufferWriter.writeObject(PofBufferWriter.java:1325)
at com.tangosol.io.pof.PofBufferWriter$UserTypeWriter.writeObject(PofBufferWriter.java:2092)
at com.apx.core.datalayer.data.basictypes.BigDecimalMoneyImpl.writeExternal(BigDecimalMoneyImpl.java:127)
at com.tangosol.io.pof.PortableObjectSerializer.serialize(PortableObjectSerializer.java:88)
at com.tangosol.io.pof.PofBufferWriter.writeObject(PofBufferWriter.java:1439)
at com.tangosol.io.pof.PofBufferWriter$UserTypeWriter.writeObject(PofBufferWriter.java:2092)
at com.apx.instrument.datalayer.data.domain.impl.DOtcInstrumentImpl.writeExternal(DOtcInstrumentImpl.java:200)
at com.apx.core.datalayer.data.impl.AbstractDomainObject.writeExternal(AbstractDomainObject.java:109)
... 185 more
at com.tangosol.coherence.ra.component.connector.resourceAdapter.cciAdapter.CacheAdapter$ManagedConnection$LocalTransaction.commit(CacheAdapter.CDB:37)
at weblogic.connector.security.layer.AdapterLayer.commit(AdapterLayer.java:570)
at weblogic.connector.transaction.outbound.NonXAWrapper.commit(NonXAWrapper.java:84)
at weblogic.transaction.internal.NonXAServerResourceInfo.commit(NonXAServerResourceInfo.java:330)
at weblogic.transaction.internal.ServerTransactionImpl.globalPrepare(ServerTransactionImpl.java:2251)
at weblogic.transaction.internal.ServerTransactionImpl.internalCommit(ServerTransactionImpl.java:270)
at weblogic.transaction.internal.ServerTransactionImpl.commit(ServerTransactionImpl.java:230)
at weblogic.transaction.internal.TransactionManagerImpl.commit(TransactionManagerImpl.java:283)
at $Proxy150.create(Unknown Source)
javax.resource.spi.LocalTransactionException: CoherenceRA: Commit failed:
java.lang.RuntimeException: error with the class: com.apx.instrument.datalayer.data.domain.impl.DOtcInstrumentImpl
at com.apx.core.datalayer.data.impl.AbstractDomainObject.writeExternal(AbstractDomainObject.java:111)
at com.tangosol.io.pof.PortableObjectSerializer.serialize(PortableObjectSerializer.java:88)
at com.tangosol.io.pof.PofBufferWriter.writeObject(PofBufferWriter.java:1439)
at com.tangosol.io.pof.ConfigurablePofContext.serialize(ConfigurablePofContext.java:338)
at com.tangosol.util.ExternalizableHelper.serializeInternal(ExternalizableHelper.java:2508)
at com.tangosol.util.ExternalizableHelper.toBinary(ExternalizableHelper.java:205)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.DistributedCache$ConverterValueToBinary.convert(DistributedCache.CDB:3)
at com.tangosol.util.ConverterCollections$AbstractConverterEntry.getValue(ConverterCollections.java:3333)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.DistributedCache$BinaryMap.putAll(DistributedCache.CDB:19)
at com.tangosol.util.ConverterCollections$ConverterMap.putAll(ConverterCollections.java:1570)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.DistributedCache$ViewMap.putAll(DistributedCache.CDB:1)
at com.tangosol.coherence.component.util.SafeNamedCache.putAll(SafeNamedCache.CDB:1)
at com.tangosol.coherence.component.util.collections.WrapperMap.putAll(WrapperMap.CDB:1)
at com.tangosol.coherence.component.util.DeltaMap.resolve(DeltaMap.CDB:9)
at com.tangosol.coherence.component.util.deltaMap.TransactionMap.commit(TransactionMap.CDB:1)
at com.tangosol.coherence.component.util.TransactionCache.commit(TransactionCache.CDB:14)
at com.tangosol.coherence.component.util.transactionCache.Local.commit(Local.CDB:1)
at com.tangosol.coherence.ra.component.connector.resourceAdapter.cciAdapter.CacheAdapter$ManagedConnection$LocalTransaction.commit(CacheAdapter.CDB:25)
at weblogic.connector.security.layer.AdapterLayer.commit(AdapterLayer.java:570)
at weblogic.connector.transaction.outbound.NonXAWrapper.commit(NonXAWrapper.java:84)
at weblogic.transaction.internal.NonXAServerResourceInfo.commit(NonXAServerResourceInfo.java:330)
at weblogic.transaction.internal.ServerTransactionImpl.globalPrepare(ServerTransactionImpl.java:2251)
at weblogic.transaction.internal.ServerTransactionImpl.internalCommit(ServerTransactionImpl.java:270)
at weblogic.transaction.internal.ServerTransactionImpl.commit(ServerTransactionImpl.java:230)
at weblogic.transaction.internal.TransactionManagerImpl.commit(TransactionManagerImpl.java:283)
at org.springframework.transaction.jta.JtaTransactionManager.doCommit(JtaTransactionManager.java:1009)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:374)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

Answer 1

Hi SR-APX
The problem is that even though you are using the JCA adaptor Coherence (pre-3.6) is not really transactional. Once you commit all that data is still being pushed out to the distributed cluster members who all work independently. An error on one member will not stop data being written successfully to others.
In Coherence 3.6 there are real transactions but you would need to see if the limitations on them fit your use-cases.
JK