[jboss-jira] [JBoss JIRA] Commented: (JBAS-7379) UpgradeException when concurrently accessing the session after failover with buddy replication

[Dennis Reed (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBAS-7379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12490105#action_12490105 ] 

Dennis Reed commented on JBAS-7379:
-----------------------------------

To recreate:

Start two stock clustered configurations, with buddy replication enabled for web sessions.
Hit a test JSP that accesses the session on instance 1.
Shut down instance 2.
Make several concurrent requests with the same session ID created on instance1, that hit a test JSP that access the session on instance 2.

> UpgradeException when concurrently accessing the session after failover with buddy replication
> ----------------------------------------------------------------------------------------------
>
>                 Key: JBAS-7379
>                 URL: https://jira.jboss.org/jira/browse/JBAS-7379
>             Project: JBoss Application Server
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Clustering, Web (Tomcat) service
>    Affects Versions: JBossAS-4.2.3.GA, JBossAS-5.1.0.GA
>            Reporter: Dennis Reed
>            Assignee: Dennis Reed
>
> When using buddy replication, when multiple concurrent requests are made with the same session ID after failover, most abort with an org.jboss.cache.lock.UpgradeException while trying to migrate the cache data to the local node.

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