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From "nihongye (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-2546) SISM blocks the item state cache when loading a new item
Date Sun, 27 Jun 2010 08:20:55 GMT

    [ https://issues.apache.org/jira/browse/JCR-2546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12882932#action_12882932

nihongye commented on JCR-2546:

ItemStateReferenceCache is thread safe,for JMM happen-before rule:

// put it in cache
// set parent container

the statments must be revert:


> SISM blocks the item state cache when loading a new item
> --------------------------------------------------------
>                 Key: JCR-2546
>                 URL: https://issues.apache.org/jira/browse/JCR-2546
>             Project: Jackrabbit Content Repository
>          Issue Type: Improvement
>          Components: jackrabbit-core
>            Reporter: Jukka Zitting
>            Assignee: Jukka Zitting
>             Fix For: 2.1.0
> The SharedItemStateManager.getNonVirtualItemState() method contains a loadItemState()
call within a "synchronized (cache)" block. This prevents all item state cache access while
a new item is being loaded from the persistence manager. I have at least one case where this
has caused a serious performance drop, essentially synchronizing repository access for all

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