[jboss-jira] [JBoss JIRA] (WFLY-6489) Distributable session may not exist after redirect to same node with optimistic locking.

[Paul Ferraro (JIRA)]

    [ https://issues.jboss.org/browse/WFLY-6489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13186315#comment-13186315 ] 

Paul Ferraro edited comment on WFLY-6489 at 4/4/16 8:01 PM:
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Is there a particular reason why you are using optimistic locking?  Optimistic locking will permit dirty reads - which explains your observations.  Your use case requires PESSIMISTIC locking + REPEATABLE_READ isolation (i.e. the defaults).


was (Author: pferraro):
Is there a particular reason why you are using optimistic locking?  For most users, I wouldn't recommend any configuration other than PESSIMISTIC+REPEATABLE_READ (i.e. the defaults).

> Distributable session may not exist after redirect to same node with optimistic locking.
> ----------------------------------------------------------------------------------------
>
>                 Key: WFLY-6489
>                 URL: https://issues.jboss.org/browse/WFLY-6489
>             Project: WildFly
>          Issue Type: Bug
>          Components: Clustering
>    Affects Versions: 8.2.1.Final, 10.0.0.Final, 10.1.0.Final
>            Reporter: Gabriel Lavoie
>            Assignee: Paul Ferraro
>            Priority: Critical
>         Attachments: wildfly-10-session-issue.zip
>
>
> I'm currently working on porting an application running on EAP 6.1 to WildFly 10 and am encountering multiple session/authentication issues with clustering enabled. Our login flow currently starts from a servlet that accepts the credentials, creates the session, then redirect to the welcome page. 
> The first time we execute this flow after the startup of a node, the welcome page can't see at all the session created previously.
> - request.getSession() creates yet another session and a new session cookie is returned.
> - request.getSession(false) returns "null"
> On the second attempt, the flow works as expected.
> The issue can be reproduced on both a single node or a two nodes cluster, as long as <distributable /> is enabled in web.xml. 
> We are currently using the master build https://ci.jboss.org/hudson/job/WildFly-latest-master/2244/, but the problem has been noticed on 10.0.0-Final and also 8.2.1-Final.
> I attached a sample web application that I used to reproduce the issue. Our standalone.xml is also included with the clustering configuration we've been using for the web/session cache.



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