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Type: Bug
Resolution: Done
Priority: Major
Fix Version/s: 26.0.0.Beta1, 26.0.0.Final
Affects Version/s: 25.0.0.Final
Component/s: Clustering
Labels:
None

Git Pull Request:
https://github.com/wildfly/wildfly/pull/14846, https://github.com/wildfly/wildfly/pull/14906

Affects SESSION granularity using REPEATABLE_READ transactional cache.

Coarse granularity distributed web session store attributes within a HashMap and rely on write locking of the session creation meta data entry to prevent concurrent modification. However, this does not prevent state transfer from marshalling the session attributes entry. To fix, we should require write locks on the session attributes entry as well.

2021-10-18 20:20:16,081 ERROR [org.infinispan.remoting.rpc.RpcManagerImpl] (transport-thread--p6-t17) ISPN000073: Unexpected error while replicating: java.util.ConcurrentModificationException
    at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445)
    at java.util.HashMap$EntryIterator.next(HashMap.java:1479)
    at java.util.HashMap$EntryIterator.next(HashMap.java:1477)
    at org.wildfly.clustering.marshalling.spi.util.MapExternalizer.writeMap(MapExternalizer.java:56)
    at org.wildfly.clustering.marshalling.spi.util.MapExternalizer.writeObject(MapExternalizer.java:51)
    at org.wildfly.clustering.marshalling.spi.util.MapExternalizer.writeObject(MapExternalizer.java:38)
    at org.wildfly.clustering.marshalling.spi.DefaultExternalizer.writeObject(DefaultExternalizer.java:179)
    at org.wildfly.clustering.marshalling.jboss.ExternalizerObjectTable$ExternalizerWriter.writeObject(ExternalizerObjectTable.java:126)
    at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:137)
    at org.jboss.marshalling.AbstractObjectOutput.writeObject(AbstractObjectOutput.java:58)
    at org.jboss.marshalling.AbstractMarshaller.writeObject(AbstractMarshaller.java:111)
    at org.wildfly.clustering.marshalling.jboss.SimpleMarshalledValue.getBytes(SimpleMarshalledValue.java:78)
    at org.wildfly.clustering.marshalling.jboss.SimpleMarshalledValueExternalizer.writeObject(SimpleMarshalledValueExternalizer.java:51)
    at org.wildfly.clustering.marshalling.jboss.SimpleMarshalledValueExternalizer.writeObject(SimpleMarshalledValueExternalizer.java:36)
    at org.wildfly.clustering.marshalling.infinispan.AdvancedExternalizerAdapter.writeObject(AdvancedExternalizerAdapter.java:51)
    at org.infinispan.marshall.core.ExternalExternalizers$ForeignAdvancedExternalizer.writeObject(ExternalExternalizers.java:78)
    at org.infinispan.marshall.core.GlobalMarshaller.writeExternal(GlobalMarshaller.java:652)
    at org.infinispan.marshall.core.GlobalMarshaller.writeNonNullableObject(GlobalMarshaller.java:406)
    at org.infinispan.marshall.core.GlobalMarshaller.writeNullableObject(GlobalMarshaller.java:355)
    at org.infinispan.marshall.core.BytesObjectOutput.writeObject(BytesObjectOutput.java:26)
    at org.infinispan.container.entries.ImmortalCacheEntry$Externalizer.writeObject(ImmortalCacheEntry.java:126)
    at org.infinispan.container.entries.ImmortalCacheEntry$Externalizer.writeObject(ImmortalCacheEntry.java:122)
    at org.infinispan.marshall.core.GlobalMarshaller.writeInternal(GlobalMarshaller.java:638)
    at org.infinispan.marshall.core.GlobalMarshaller.writeNonNullableObject(GlobalMarshaller.java:402)
    at org.infinispan.marshall.core.GlobalMarshaller.writeNullableObject(GlobalMarshaller.java:355)
    at org.infinispan.marshall.core.BytesObjectOutput.writeObject(BytesObjectOutput.java:26)
    at org.infinispan.commons.marshall.MarshallUtil.marshallCollection(MarshallUtil.java:243)
    at org.infinispan.commons.marshall.MarshallUtil.marshallCollection(MarshallUtil.java:221)
    at org.infinispan.marshall.exts.CollectionExternalizer.writeObject(CollectionExternalizer.java:75)
    at org.infinispan.marshall.exts.CollectionExternalizer.writeObject(CollectionExternalizer.java:27)
    at org.infinispan.marshall.core.GlobalMarshaller.writeInternal(GlobalMarshaller.java:638)
    at org.infinispan.marshall.core.GlobalMarshaller.writeNonNullableObject(GlobalMarshaller.java:402)
    at org.infinispan.marshall.core.GlobalMarshaller.writeNullableObject(GlobalMarshaller.java:355)
    at org.infinispan.marshall.core.BytesObjectOutput.writeObject(BytesObjectOutput.java:26)
    at org.infinispan.statetransfer.StateChunk$Externalizer.writeObject(StateChunk.java:80)
    at org.infinispan.statetransfer.StateChunk$Externalizer.writeObject(StateChunk.java:65)
    at org.infinispan.marshall.core.GlobalMarshaller.writeInternal(GlobalMarshaller.java:638)
    at org.infinispan.marshall.core.GlobalMarshaller.writeNonNullableObject(GlobalMarshaller.java:402)
    at org.infinispan.marshall.core.GlobalMarshaller.writeNullableObject(GlobalMarshaller.java:355)
    at org.infinispan.marshall.core.BytesObjectOutput.writeObject(BytesObjectOutput.java:26)
    at org.infinispan.commons.marshall.MarshallUtil.marshallCollection(MarshallUtil.java:243)
    at org.infinispan.commons.marshall.MarshallUtil.marshallCollection(MarshallUtil.java:221)
    at org.infinispan.statetransfer.StateResponseCommand.writeTo(StateResponseCommand.java:131)
    at org.infinispan.marshall.exts.ReplicableCommandExternalizer.writeCommandParameters(ReplicableCommandExternalizer.java:71)
    at org.infinispan.marshall.exts.CacheRpcCommandExternalizer.marshallParameters(CacheRpcCommandExternalizer.java:121)
    at org.infinispan.marshall.exts.CacheRpcCommandExternalizer.writeObject(CacheRpcCommandExternalizer.java:117)
    at org.infinispan.marshall.exts.CacheRpcCommandExternalizer.writeObject(CacheRpcCommandExternalizer.java:67)
    at org.infinispan.marshall.core.GlobalMarshaller.writeInternal(GlobalMarshaller.java:638)
    at org.infinispan.marshall.core.GlobalMarshaller.writeNonNullableObject(GlobalMarshaller.java:402)
    at org.infinispan.marshall.core.GlobalMarshaller.writeNullableObject(GlobalMarshaller.java:355)
    at org.infinispan.marshall.core.GlobalMarshaller.writeObjectOutput(GlobalMarshaller.java:183)
    at org.infinispan.marshall.core.GlobalMarshaller.writeObjectOutput(GlobalMarshaller.java:176)
    at org.infinispan.marshall.core.GlobalMarshaller.objectToBuffer(GlobalMarshaller.java:305)
    at org.infinispan.remoting.transport.jgroups.JGroupsTransport.marshallRequest(JGroupsTransport.java:1007)
    at org.infinispan.remoting.transport.jgroups.JGroupsTransport.sendCommand(JGroupsTransport.java:990)
    at org.infinispan.remoting.transport.jgroups.JGroupsTransport.invokeCommand(JGroupsTransport.java:826)
    at org.infinispan.remoting.transport.jgroups.JGroupsTransport.performSyncRemoteInvocation(JGroupsTransport.java:1120)
    at org.infinispan.remoting.transport.jgroups.JGroupsTransport.invokeRemotelyAsync(JGroupsTransport.java:249)
    at org.infinispan.remoting.rpc.RpcManagerImpl.invokeRemotelyAsync(RpcManagerImpl.java:291)
    at org.infinispan.remoting.rpc.RpcManagerImpl.invokeRemotely(RpcManagerImpl.java:323)
    at org.infinispan.statetransfer.OutboundTransferTask.sendEntries(OutboundTransferTask.java:266)
    at org.infinispan.statetransfer.OutboundTransferTask.run(OutboundTransferTask.java:205)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at org.wildfly.clustering.service.concurrent.ClassLoaderThreadFactory.lambda$newThread$0(ClassLoaderThreadFactory.java:47)
    at java.lang.Thread.run(Thread.java:748)
Caused by: an exception which occurred:
    in object java.util.HashMap@7f3d222

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