[infinispan-issues] [JBoss JIRA] (ISPN-1213) TreeCache expires parents that have children

[Galder Zamarreño (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-1213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12670780#comment-12670780 ] 

Galder Zamarreño commented on ISPN-1213:
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@Nathan, as indicated by Manik, the fix is no trivial. You might be able to workaround this by plugging your own data container into Infinispan. You can do this by extending DefaultDataContainer and then your own implementation in the config (via xml or programmatically). The idea is that you'd override purgeExpired() and you'd check whether the entry expired has any children and maybe clear the contents rather than deleting the node altogether. You'd also need to override get() cos if the entry is expired, it'd directly remove it. Note that I have not tested this and not sure whether you'd be able to find out whether a node has children from purgeExpired(), but if you're desperate and as Manik said, you can't work around walking the tree, it might be worth a try.


                
> TreeCache expires parents that have children
> --------------------------------------------
>
>                 Key: ISPN-1213
>                 URL: https://issues.jboss.org/browse/ISPN-1213
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Eviction
>    Affects Versions: 4.2.1.FINAL
>            Reporter: Todd Ciezadlo
>            Assignee: Manik Surtani
>             Fix For: 5.2.0.FINAL
>
>         Attachments: ExpirationTest.java, TreeCacheUtil.java
>
>
> TreeCache parents expire according to the max-idle value even if they contain children.  This puts the tree cache in an inconsistent state since the "dangling" children can be retrieved through TreeCache.get(FQN, String) calls, but cannot be traversed to through TreeCache.getRoot() and Node.getChildren() calls.
> Attached unit test to to reproduce.

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