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From "Marcel Reutegger (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (JCR-1705) Reduce memory usage of transient nodes
Date Wed, 03 Sep 2008 13:13:44 GMT

     [ https://issues.apache.org/jira/browse/JCR-1705?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Marcel Reutegger resolved JCR-1705.
-----------------------------------

       Resolution: Fixed
    Fix Version/s: 1.5

Committed patch in revision: 691603

Thank you all for reviewing.

> 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
>             Fix For: 1.5
>
>         Attachments: JCR-1705-refactored.patch, JCR-1705-refactored.patch, JCR-1705.patch,
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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