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Posted to dev@jackrabbit.apache.org by "Jukka Zitting (Commented) (JIRA)" <ji...@apache.org> on 2012/02/06 12:51:59 UTC

[jira] [Commented] (JCR-2650) don't silently merge session-local transient changes with external changes before save().

    [ https://issues.apache.org/jira/browse/JCR-2650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13201231#comment-13201231 ] 

Jukka Zitting commented on JCR-2650:
------------------------------------

In fact the above deadlock scenario still exists (see JCR-3226). Instead of stateCreated(), this issue fixed the potential problem with the (much more frequent) stateModified() method.
                
> don't silently merge session-local transient changes with external changes before save().
> -----------------------------------------------------------------------------------------
>
>                 Key: JCR-2650
>                 URL: https://issues.apache.org/jira/browse/JCR-2650
>             Project: Jackrabbit Content Repository
>          Issue Type: Improvement
>          Components: jackrabbit-core
>            Reporter: Stefan Guggisberg
>             Fix For: 2.2
>
>         Attachments: JCR-2650 (cleaned).patch, JCR-2650.patch
>
>
> currently, external changes (i.e. changes committed by other sessions) are silently merged with transient changes. this might potentially cause concurrency issues/inconsistent transient state (see e.g. JCR-2632).
> it would probably be better to isolate transient changes from external changes until they're saved (true copy-on-write). 

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