I did not describe the problems correctly. I have 3 solr shards with solr homes .../solrs/4.0/1 .../solrs/4.0/2 and .../solrs/4.0/2solrs/3
For shard 1 I have a solr.xml file with the modifications described in the previous message. For that instance, it appears that the problem is that the semantics of specifing the instancedir have changed between 3.6 and 4.0. I specified the instancedir as instanceDir="." However, I get this error in the log: "Cannot create directory: /l/solrs/dev/solrs/4.0/1/./data/index" Note that instead of using Solr home /l/solrs/dev/solrs/4.0/1 (what I would expect for the relative path "."), that Solr appears to be appending "." to Solr home. The solr.xml file says that paths are relative to the "installation directory". Perhaps that needs to be clarified in the file. For shards 2 and 3, I tried not using a solr.xml file and I did not create a "collection1" subdirectory. For these solr instances, I got the messages about collection1 and files not being found in the $SOLRHOME/collection1 path " Can't find resource 'solrconfig.xml' in classpath or '/l/solrs/dev/solrs/4.0/3/collection1/conf/', cwd=/l/local/apache-tomcat-dev" Looking at the logs it appears that "collection1" is specified as the default core somewhere: Aug 23, 2012 12:42:47 PM org.apache.solr.core.CoreContainer$Initializer initialize INFO: looking for solr.xml: /l/solrs/dev/solrs/4.0/3/solr.xml Aug 23, 2012 12:42:47 PM org.apache.solr.core.CoreContainer <init> INFO: New CoreContainer 1281149250 Aug 23, 2012 12:42:47 PM org.apache.solr.core.CoreContainer$Initializer initialize INFO: no solr.xml file found - using default Aug 23, 2012 12:42:47 PM org.apache.solr.core.CoreContainer load INFO: Loading CoreContainer using Solr Home: '/l/solrs/dev/solrs/4.0/3/' Aug 23, 2012 12:42:47 PM org.apache.solr.core.SolrResourceLoader <init> INFO: Creating SolrCore 'collection1' using instanceDir: /l/solrs/dev/solrs/4.0/3/collection1 Is this default of "collection1" specified in some other config file or hardcoded into Solr somewhere? If using a core is mandatory with Solr 4.0 , the CoreAdmin wiki page and the release notes should point this out. Tom
