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https://issues.apache.org/jira/browse/SOLR-5323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13790362#comment-13790362
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Erik Hatcher commented on SOLR-5323:
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I think we should have the <lib> elements in solrconfig.xml be something like
this:
{code}
<lib dir="${solr.install.dir}/contrib/clustering/lib/" regex=".*\.jar" />
{code}
where solr.install.dir is a property defined by Solr automatically at startup
that has the root of where Solr is installed. I've done this manually by
adjusting the configuration in this exact scenario (copying the example
configuration and changing all <lib>'s in this way and defining
solr.install.dir on the command-line), but Solr should be able to do this
better.
> Solr requires -Dsolr.clustering.enabled=false when pointing at example config
> -----------------------------------------------------------------------------
>
> Key: SOLR-5323
> URL: https://issues.apache.org/jira/browse/SOLR-5323
> Project: Solr
> Issue Type: Bug
> Components: contrib - Clustering
> Affects Versions: 4.5
> Environment: vanilla mac
> Reporter: John Berryman
> Fix For: 5.0, 4.6
>
>
> my typical use of Solr is something like this:
> {code}
> cd SOLR_HOME/example
> cp -r solr /myProjectDir/solr_home
> java -jar -Dsolr.solr.home=/myProjectDir/solr_home start.jar
> {code}
> But in solr 4.5.0 this fails to start successfully. I get an error:
> {code}
> org.apache.solr.common.SolrException: Error loading class
> 'solr.clustering.ClusteringComponent'
> {code}
> The reason is because solr.clustering.enabled defaults to true now. I don't
> know why this might be the case.
> you can get around it with
> {code}
> java -jar -Dsolr.solr.home=/myProjectDir/solr_home
> -Dsolr.clustering.enabled=false start.jar
> {code}
> SOLR-4708 is when this became an issue.
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