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From: "Dube, Shreyas" <sdube@akamai.com>
To: "users@jackrabbit.apache.org" <users@jackrabbit.apache.org>
Date: Thu, 10 Apr 2014 10:02:04 -0400
Subject: Persisting SearchIndex to database
Thread-Topic: Persisting SearchIndex to database
Thread-Index: Ac9UxXR4JNsjcf/QQGCeljOAgF04Hw==
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Hello,

Background: I=92m evaluating JCR/Jackrabbit as a layer of abstraction for p=
ersistence over Oracle. We are using Tomcat6 as the application server. We =
usually have 4 =96 8 Tomcat=92s clustered up in the production environment.=
 I have configured all <FileSystem> and <PersistenceManager> stanzas to poi=
nt to Oracle (well, I=92m using MySQL now, but that=92ll change). I have NO=
T set up clustering in Jackrabbit yet and that is something I want to look =
at once I figure <SearchIndex> out. This is my <SearchIndex> configuration =
for a <Workspace>

        <SearchIndex class=3D"org.apache.jackrabbit.core.query.lucene.Searc=
hIndex">
            <param name=3D"path" value=3D"${wsp.home}/index"/>
            <param name=3D"extractorPoolSize" value=3D"2"/>
            <param name=3D"supportHighlighting" value=3D"true"/>
        </SearchIndex>

This <SearchIndex> configuration ends up creating a bunch of files under ${=
wsp.home}/index under the repository home and the workspace home directory.
Questions:

 1.  What are these files storing? I=92m assuming it is the search index.
 2.  Given that we have a clustered Tomcat setup, would it be possible to p=
ersist the search index to the database?
 3.  If 2 is not possible, are there other search providers that would work=
 in a clustered environment?
 4.  Would turning on Jackrabbit clustering sync search indexes across all =
nodes? When are search indexes updated in a clustered environment?

Thanks,
Shreyas

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