Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

Bug 903253

Summary: ConcurrentModificationException in StateRequestCommand
Product: [JBoss] JBoss Data Grid 6 Reporter: Radim Vansa <rvansa>
Component: InfinispanAssignee: Tristan Tarrant <ttarrant>
Status: CLOSED UPSTREAM QA Contact: Martin Gencur <mgencur>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 6.1.0CC: jdg-bugs
Target Milestone: ER10   
Target Release: 6.1.0   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2025-02-10 03:27:21 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Radim Vansa 2013-01-23 15:14:44 UTC 
I have tried async replication scenario with async marshalling (optimistic transactions) and this has occurred:

04:34:15,182 ERROR [org.infinispan.remoting.rpc.RpcManagerImpl] (OOB-77,edg-perf11-48420) ISPN000073: Unexpected error while replicating
java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
	at java.util.HashMap$KeyIterator.next(HashMap.java:828)
	at org.infinispan.statetransfer.StateProviderImpl.collectTransactionsToTransfer(StateProviderImpl.java:239)
	at org.infinispan.statetransfer.StateProviderImpl.getTransactionsForSegments(StateProviderImpl.java:200)
	at org.infinispan.statetransfer.StateRequestCommand.perform(StateRequestCommand.java:88)
	at org.infinispan.remoting.InboundInvocationHandlerImpl.handleInternal(InboundInvocationHandlerImpl.java:101)
	at org.infinispan.remoting.InboundInvocationHandlerImpl.handleWithWaitForBlocks(InboundInvocationHandlerImpl.java:122)
	at org.infinispan.remoting.InboundInvocationHandlerImpl.handle(InboundInvocationHandlerImpl.java:86)
	at org.infinispan.remoting.transport.jgroups.CommandAwareRpcDispatcher.executeCommandFromLocalCluster(CommandAwareRpcDispatcher.java:245)
	at org.infinispan.remoting.transport.jgroups.CommandAwareRpcDispatcher.handle(CommandAwareRpcDispatcher.java:218)
	at org.jgroups.blocks.RequestCorrelator.handleRequest(RequestCorrelator.java:484)
	at org.jgroups.blocks.RequestCorrelator.receiveMessage(RequestCorrelator.java:391)
	at org.jgroups.blocks.RequestCorrelator.receive(RequestCorrelator.java:249)
	at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:598)
	at org.jgroups.JChannel.up(JChannel.java:707)

Seems that StateRequestCommand is iterating through all transactions' locked keys but the collections of these locked keys can be modified by interfering prepare/commi
Comment 1 JBoss JIRA Server 2013-01-23 16:12:56 UTC 
Adrian Nistor <anistor> updated the status of jira ISPN-2736 to Coding In Progress
Comment 3 Red Hat Bugzilla 2025-02-10 03:27:21 UTC 
This product has been discontinued or is no longer tracked in Red Hat Bugzilla.