[infinispan-issues] [JBoss JIRA] (ISPN-3745) Forwarded Prepare/Commit executed after transaction finished

[Radim Vansa (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-3745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12928082#comment-12928082 ] 

Radim Vansa commented on ISPN-3745:
-----------------------------------

You're right, as I have synchronous tx cache, the forwarding should be synchronous. Regrettably, I miss the logs from the forwarding node (it got truncated), just to let you see what happened:

{code}
04:19:29,410 TRACE [org.infinispan.remoting.transport.jgroups.CommandAwareRpcDispatcher] (OOB-95,default,apex862-11617) Attempting to execute command: CommitCommand {gtx=GlobalTransaction:<apex861-22006>:164595:
local, cacheName='testCache', topologyId=18} [sender=apex861-22006]
04:19:29,411 TRACE [org.infinispan.remoting.InboundInvocationHandlerImpl] (remote-thread-14) Calling perform() on CommitCommand {gtx=GlobalTransaction:<apex861-22006>:164595:remote, cacheName='testCache', topologyId=18}
04:19:29,412 TRACE [org.infinispan.remoting.InboundInvocationHandlerImpl] (remote-thread-14) About to send back response SuccessfulResponse{responseValue=null}  for command CommitCommand {gtx=GlobalTransaction:<apex861-22006>:164595:remote, cacheName='testCache', topologyId=18}
04:19:31,301 TRACE [org.infinispan.remoting.transport.jgroups.CommandAwareRpcDispatcher] (OOB-78,default,apex862-11617) Attempting to execute command: PrepareCommand {modifications=[ ... ], onePhaseCommit=false, gtx=GlobalTransaction:<apex861-22006>:164595:local, cacheName='testCache', topologyId=19} [sender=apex863-20495]
{code}
                
> Forwarded Prepare/Commit executed after transaction finished
> ------------------------------------------------------------
>
>                 Key: ISPN-3745
>                 URL: https://issues.jboss.org/browse/ISPN-3745
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Transactions
>    Affects Versions: 6.0.0.Final
>            Reporter: Radim Vansa
>            Assignee: Dan Berindei
>            Priority: Critical
>              Labels: 620
>
> Replicated TX cache, nodes A, B, C
> 0. A and B have topology 2, C already got topology 3
> 1. A sends prepare with topology 2 to B and C, both apply the prepare and respond
> 2. C forwards prepare to B with topology 3
> 3. A sends commit with topology 2 to B and C, both commit and respond
> 4. again, C forwards prepare to B with topology 3
> 5. A and B get updated topology id
> 6. A executes another transaction on the same entry
> 7. prepare and commit from first transaction with topology 3 arrive at B - B overwrites (or removes) the entry again
> Result: on B we have inconsistent state

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