[gatein-issues] [JBoss JIRA] (GTNPORTAL-3475) NPE in LinkedList$ListItr.next when iterating over UIGroupMembershipSelect.getListMemberhip()

[Peter Palaga (JIRA)]

     [ https://issues.jboss.org/browse/GTNPORTAL-3475?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Peter Palaga updated GTNPORTAL-3475:
------------------------------------

              Status: Pull Request Sent  (was: Open)
    Git Pull Request: https://github.com/gatein/gatein-portal/pull/854


> NPE in LinkedList$ListItr.next when iterating over UIGroupMembershipSelect.getListMemberhip()
> ---------------------------------------------------------------------------------------------
>
>                 Key: GTNPORTAL-3475
>                 URL: https://issues.jboss.org/browse/GTNPORTAL-3475
>             Project: GateIn Portal
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>            Reporter: Peter Palaga
>         Attachments: GTNPORTAL-3475.log
>
>
> Looks like a concurrent modification of  the {{LinkedList}} refered to by {{UIGroupMembershipSelect.listMemberhip}}, because:
> i. It is not always reproducible, the NPE occurs roughly once per 10 attempts.
> ii. It happens on line {{next = next.next}} of the JRE's {{LinkedList.ListItr}} where it is hard to thing of anything else than concurrent modification as a cause.
> Steps to reproduce:
> (1) Start clean Portal instance for the first time
> (2) Go to Application Registry
> (3) Import Applications
> Not OK: There is an NPE logged (the whole log is attached):
> {code:none}
> Caused by: java.lang.NullPointerException
> 	at java.util.LinkedList$ListItr.next(LinkedList.java:891) [rt.jar:1.7.0_55]
> 	at UIGroupMembershipSelector.run(UIGroupMembershipSelector.gtmpl:20)	at org.exoplatform.groovyscript.GroovyScript.render(GroovyScript.java:99) [exo.portal.component.scripting-3.8.0.Beta02-SNAPSHOT.jar:3.8.0.Beta02-SNAPSHOT]
> 	at org.exoplatform.groovyscript.GroovyTemplate.render(GroovyTemplate.java:115) [exo.portal.component.scripting-3.8.0.Beta02-SNAPSHOT.jar:3.8.0.Beta02-SNAPSHOT]
> {code}
> Expected: No NPE



--
This message was sent by Atlassian JIRA
(v6.2.3#6260)