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From "Jukka Zitting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-1705) Reduce memory usage of transient nodes
Date Mon, 04 Aug 2008 14:10:44 GMT

    [ https://issues.apache.org/jira/browse/JCR-1705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12619522#action_12619522
] 

Jukka Zitting commented on JCR-1705:
------------------------------------

+1 I like the way you got rid of many of the sharedChildNodeEntries conditionals!

On the other hand, I don't like that we add another special case to the already complex NodeState
handling. But I guess cleaning up the NodeState class is a topic for another issue.

> Reduce memory usage of transient nodes
> --------------------------------------
>
>                 Key: JCR-1705
>                 URL: https://issues.apache.org/jira/browse/JCR-1705
>             Project: Jackrabbit
>          Issue Type: Improvement
>          Components: jackrabbit-core
>            Reporter: Marcel Reutegger
>            Priority: Minor
>         Attachments: JCR-1705.patch
>
>
> When adding lots of transient nodes, most of them don't have child nodes because they
are leafs. The attached patch initializes NodeState.childNodeEntries with an unmodifiable
empty ChildNodeEntries instance and turns it into a modifiable one only when needed.
> Running a test with 100k nodes (10 children per node) the memory consumption for child
node entries drops from 42MB to 12MB with this patch.

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