[jira] [Resolved] (JS2-1294) Concurrency Issue with SessionPathResolverCache

["David Sean Taylor (JIRA)" <je...@portals.apache.org>]

     [ https://issues.apache.org/jira/browse/JS2-1294?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Sean Taylor resolved JS2-1294.
------------------------------------

    Resolution: Fixed

applied patch from Joachim. Replaced SynchronizedMap with ConcurrentHashMap

> Concurrency Issue with SessionPathResolverCache
> -----------------------------------------------
>
>                 Key: JS2-1294
>                 URL: https://issues.apache.org/jira/browse/JS2-1294
>             Project: Jetspeed 2
>          Issue Type: Bug
>          Components: Components Core
>    Affects Versions: 2.2.0, 2.2.1, 2.2.2
>         Environment: websphere, IBM Java
>            Reporter: Joachim Mueller
>            Assignee: David Sean Taylor
>             Fix For: 2.3.0
>
>         Attachments: JS2-1294.patch
>
>
> A race condition can occur in SessionPathResolverCache since the internal cache is initialized with a non-threadsave HashMap.
> Under websphere we can observe blocking threads while accessing the map at:
> ...
> at java/util/HashMap.findNonNullKeyEntry(HashMap.java:601(Compiled Code)) 
> at java/util/HashMap.getEntry(HashMap.java:585(Compiled Code)) 
> at java/util/HashMap.get(HashMap.java:571(Compiled Code)) 
> at org/apache/jetspeed/decoration/caches/HashMapPathResolverCache.getPath(HashMapPathResolverCache.java:49(Compiled Code)) 
> ...
> The base class HashMapPathResolverCache is not used and can be removed completely, all methods can be migrated to SessionPathResolverCache.
> Additional a spelling typo has been fixed.
> patch follows...



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