[infinispan-issues] [JBoss JIRA] (ISPN-2008) Optimistic concurrency in REST server is not using atomic operations

[Galder Zamarreño (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-2008?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Galder Zamarreño updated ISPN-2008:
-----------------------------------

    Fix Version/s: 5.2.0.ALPHA3
                       (was: 5.2.0.ALPHA2)

    
> Optimistic concurrency in REST server is not using atomic operations
> --------------------------------------------------------------------
>
>                 Key: ISPN-2008
>                 URL: https://issues.jboss.org/browse/ISPN-2008
>             Project: Infinispan
>          Issue Type: Bug
>    Affects Versions: 5.1.4.CR1
>            Reporter: Eugen Dück
>            Assignee: Manik Surtani
>             Fix For: 5.2.0.ALPHA3, 5.2.0.FINAL
>
>
> The REST server's optimistic currency control is not atomic. The sequence in e.g. a PUT request goes like this:
> * request.evaluatePreconditions
> * cache.put (if preconditions met)
> Which is not inside any lock (that would make it pessimistic, anyway), in other words, a race condition.
> This applies to the optimistic variants, i.e. requests carrying 'If-Match' or any of the other 'If-*' preconditions, of PUT, POST, and DELETE requests.

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