Major Description
the SolrResourceLoader constructor has this bit of logging left over from the days before multicore...
log.info("Solr home set to '" + this.instanceDir + "'");
but this is confusing and missleading since there are N+1 SOlrResourceLoaders in a given solr instance (1 for the CoreContainer, and N for the N cores) and only one of them is refering to the true "Solr Home" dir, the others are refering to the instanceDir of the respective cores.
For example, using the 3.5 example and running java -Dsolr.solr.home=multicore -jar start.jar you'll see...
Mar 21, 2012 7:02:46 PM org.apache.solr.core.SolrResourceLoader locateSolrHome INFO: JNDI not configured for solr (NoInitialContextEx) Mar 21, 2012 7:02:46 PM org.apache.solr.core.SolrResourceLoader locateSolrHome INFO: using system property solr.solr.home: multicore Mar 21, 2012 7:02:46 PM org.apache.solr.core.SolrResourceLoader <init> INFO: Solr home set to 'multicore/' Mar 21, 2012 7:02:46 PM org.apache.solr.servlet.SolrDispatchFilter init INFO: SolrDispatchFilter.init() Mar 21, 2012 7:02:46 PM org.apache.solr.core.SolrResourceLoader locateSolrHome INFO: JNDI not configured for solr (NoInitialContextEx) Mar 21, 2012 7:02:46 PM org.apache.solr.core.SolrResourceLoader locateSolrHome INFO: using system property solr.solr.home: multicore Mar 21, 2012 7:02:46 PM org.apache.solr.core.CoreContainer$Initializer initialize INFO: looking for solr.xml: /home/hossman/lucene/lucene-3.5.0_tag/solr/example/multicore/solr.xml Mar 21, 2012 7:02:46 PM org.apache.solr.core.SolrResourceLoader locateSolrHome INFO: JNDI not configured for solr (NoInitialContextEx) Mar 21, 2012 7:02:46 PM org.apache.solr.core.SolrResourceLoader locateSolrHome INFO: using system property solr.solr.home: multicore Mar 21, 2012 7:02:46 PM org.apache.solr.core.CoreContainer <init> INFO: New CoreContainer: solrHome=multicore/ instance=108681753 Mar 21, 2012 7:02:46 PM org.apache.solr.core.SolrResourceLoader <init> INFO: Solr home set to 'multicore/' Mar 21, 2012 7:02:46 PM org.apache.solr.core.SolrResourceLoader <init> INFO: Solr home set to 'multicore/core0/' ...lots of logs about initing core0... INFO: registering core: core0 Mar 21, 2012 7:02:47 PM org.apache.solr.core.SolrCore registerSearcher INFO: [core0] Registered new searcher Searcher@5dde45e2 main Mar 21, 2012 7:02:47 PM org.apache.solr.core.SolrResourceLoader <init> INFO: Solr home set to 'multicore/core1/' Mar 21, 2012 7:02:47 PM org.apache.solr.core.SolrConfig <init> ...lots of logs about initing core1... Mar 21, 2012 7:02:47 PM org.apache.solr.core.CoreContainer register INFO: registering core: core1 ...
we should revamp/add some of the log messages from CoreContainer and SolrResourceLoader to make it more clear what the one true solr home is, and when SolrresourceLoader is being used for an instanceDir of a single core.