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https://issues.apache.org/jira/browse/JCR-1196?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ard Schrijvers resolved JCR-1196.
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Resolution: Fixed
Fix Version/s: 1.4.1
Assignee: Ard Schrijvers
I close this issue as Fixed, since the fix of the hierarchical cache in
jackrabbit 1.4 solves the largest problem of this issue. Furthermore, the jira
issue is polluted with a lot of comments unrelated to the issue.
I will file a new JIRA issue 'Optimize first execution queries for
DescendantSelfAxisWeight/ChildAxisQuery' because in 1.4 consecutive executions
are fast. I will target for version 2.0 because I do not think in the current
architecture we can improve the performance for the first executions. With NGP
and perhaps storing paths info in the index we might be able to increase the
performance of the first execution. I assume NGP won't be implemented before
2.0.
> Optimize queries for DescendantSelfAxisWeight/ChildAxisQuery
> ------------------------------------------------------------
>
> Key: JCR-1196
> URL: https://issues.apache.org/jira/browse/JCR-1196
> Project: Jackrabbit
> Issue Type: Improvement
> Components: jackrabbit-core, query
> Reporter: Ard Schrijvers
> Assignee: Ard Schrijvers
> Fix For: 1.4.1
>
> Attachments: jcr-repository-xml-dump.xml.bz2
>
>
> A query like
> /documents/en/news//[EMAIL PROTECTED] order by @modificationDate
> when there are many nodes ( > 1.000) in /documents/en/news becomes very
> slow. I think the bottleneck is in something like recursive filters in
> lucene. First off all I'll try to find some stastistics about the
> performance, and describe the bottleneck. After that, a solution must be
> found, where we need to keep in mind that
> 1) these queries run faster and scale better (obviously)
> 2) moving a node must stay a cheap operation
> Also see:
> http://www.nabble.com/Search-performance--%3A-MultiIndex-tf4695559.html#a13421949
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