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

[Dan Berindei (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-3745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12928507#comment-12928507 ] 

Dan Berindei commented on ISPN-3745:
------------------------------------

Is topologyId = 18 the id of the topology that contains the joiner, or the topology before? If it's the new topology, and the command was initially invoked remotely with topology 17, then the command was forwarded, otherwise it was likely retransmitted by JGroups. 

I'm inclined to think it's caused by JGroups retransmitting the message to the joiner and the originator not waiting for the response, too.
                
> 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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