[infinispan-issues] [JBoss JIRA] (ISPN-3677) With optimistic TX, conditional commands may wrongly succeed

[RH Bugzilla Integration (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-3677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12829683#comment-12829683 ] 

RH Bugzilla Integration commented on ISPN-3677:
-----------------------------------------------

Radim Vansa <rvansa at redhat.com> made a comment on [bug 1026221|https://bugzilla.redhat.com/show_bug.cgi?id=1026221]

Situation with optimistic TX, originator = entry's primary owner:

1. The conditional check suceeds when the command is executed
2. In TxDistributionInterceptor, ignorePreviousValue is set to true
3. The command is then enlisted in the modifications list with the ignorePreviousValue set to true
4. During the prepare/commit phase the command ignores the condition

Result:
Two commands, replace(key, A, B), replace(key, A, C) may both overwrite the entry (and the one committed later wins, actually overwriting B instead of A).
                
> With optimistic TX, conditional commands may wrongly succeed
> ------------------------------------------------------------
>
>                 Key: ISPN-3677
>                 URL: https://issues.jboss.org/browse/ISPN-3677
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Core API
>    Affects Versions: 6.0.0.CR1
>            Reporter: Radim Vansa
>            Assignee: Mircea Markus
>            Priority: Critical
>
> Situation with optimistic TX, originator = entry's primary owner:
> 1. The conditional check suceeds when the command is executed
> 2. In TxDistributionInterceptor, ignorePreviousValue is set to true
> 3. The command is then enlisted in the modifications list with the ignorePreviousValue set to true
> 4. During the prepare/commit phase the command ignores the condition
> Result:
> Two commands, replace(key, A, B), replace(key, A, C) may both overwrite the entry (and the one committed later wins, actually overwriting B instead of A).

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira