[jboss-jira] [JBoss JIRA] Updated: (JBAS-3864) HttpSession replication does not always retry if replication fails

[Brian Stansberry (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBAS-3864?page=all ]

Brian Stansberry updated JBAS-3864:
-----------------------------------

    Fix Version/s: JBossAS-4.2.1.CR1
                       (was: JBossAS-4.2.0.CR1)

Deferring this, as it's a bit more complicated than I thought.  JBossCacheWrapper already retries the cache operations, but another likely place problems can occur is on tx commit, as that's when replication happens. Need to examine the locations of tx commit (e.g. BatchReplicationClusteredSessionValve, used with FIELD repl).

> HttpSession replication does not always retry if replication fails
> ------------------------------------------------------------------
>
>                 Key: JBAS-3864
>                 URL: http://jira.jboss.com/jira/browse/JBAS-3864
>             Project: JBoss Application Server
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Clustering, Web (Tomcat) service
>            Reporter: Brian Stansberry
>         Assigned To: Brian Stansberry
>             Fix For: JBossAS-4.2.1.CR1
>
>         Attachments: JBAS-3864.Branch_4_2.rev58893.svndiff
>
>
> If replication of a session fails, the session replication layer does not retry.  This leaves the local session map in JBossCacheManager out of sync with the distributed cache.  If there is a failover while the distributed cache is out of sync, the user will see stale data.
> Need to retry a (configurable) X number of times.  If the session still doesn't replicate, need to decide what to do -- i.e. is it too late in the request cycle to throw an exception and return an error to the client?

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