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From "David Johnson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-788) Upgrade to Lucene 2.1
Date Mon, 26 Mar 2007 21:07:32 GMT

    [ https://issues.apache.org/jira/browse/JCR-788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12484230
] 

David Johnson commented on JCR-788:
-----------------------------------

I have upgraded my local version to Lucene 2.1

I needed to change 2 files - the pom.xml of jackrabbit-core and org.apache.jackrabbit.core.query.lucene.PersistentIndex.java

While all tests pass, I am not sure if my change to PersistentIndex is right - specifically
I commented out the code pertaining to COMMIT_LOCK as this seems to have been removed or moved
to another class in Lucene 2.1

Is this worth a patch?  As Marcel stated, this appears to be a good upgrade, so I would like
to get this in sooner rather than later.

> Upgrade to Lucene 2.1
> ---------------------
>
>                 Key: JCR-788
>                 URL: https://issues.apache.org/jira/browse/JCR-788
>             Project: Jackrabbit
>          Issue Type: Improvement
>          Components: query
>            Reporter: Marcel Reutegger
>            Priority: Minor
>
> Lucene 2.1 contains a number of useful enhancements, which could be benefical to jackrabbit:
> - less locking on index updates -> less IO calls
> - introduces FieldSelector -> allows jackrabbit to only load required fields

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