EmbeddedSolr issues

[Karthik Manimaran <ka...@gmail.com>]

Hi,

Am getting the following messages while using EmbeddedSolr to retrieve 
the Term Vectors. I also happened to go through 
https://issues.apache.org/jira/browse/SOLR-914 . Should I ignore these 
messages and proceed or should I make any changes?

[#|2011-01-27T11:56:34.593-0500|INFO|glassfish3.0.1|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadId=33|_ThreadName=21687399  
[Finalizer] Error org.apache.solr.core.CoreContainer - CoreContainer was 
not shutdown prior to finalize(), indicates a bug -- POSSIBLE RESOURCE 
LEAK!!!

[#|2011-01-27T11:56:34.609-0500|INFO|glassfish3.0.1|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadId=33|_ThreadName=21687415  
[Finalizer] Error org.apache.solr.core.SolrCore - Too many close 
[count:-1] on org.apache.solr.core.SolrCore@1638e30. Please report this 
exception to solr-user@lucene.apache.org

[#|2011-01-27T11:56:34.611-0500|INFO|glassfish3.0.1|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadId=33|_ThreadName=21687417  
[Finalizer] Error org.apache.solr.core.SolrCore - REFCOUNT ERROR: 
unreferenced org.apache.solr.core.SolrCore@1638e30 (UserIndexCore) has a 
reference count of -1

[#|2011-01-27T11:56:34.613-0500|INFO|glassfish3.0.1|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadId=33|_ThreadName=21687419  
[Finalizer] Error org.apache.solr.common.util.ConcurrentLRUCache - 
ConcurrentLRUCache was not destroyed prior to finalize(), indicates a 
bug -- POSSIBLE RESOURCE LEAK!!!

[#|2011-01-27T11:56:34.613-0500|INFO|glassfish3.0.1|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadId=33|_ThreadName=21687420  
[Finalizer] Error org.apache.solr.common.util.ConcurrentLRUCache - 
ConcurrentLRUCache was not destroyed prior to finalize(), indicates a 
bug -- POSSIBLE RESOURCE LEAK!!!


This is the code am using:
public static SolrCore USER_IDX_CORE;

public static Map<String, String> getTermsVector(String userId) throws 
ParserConfigurationException, IOException, SAXException {
Map<String, String> freqMap = new HashMap<String, String>();
         try {
             SolrConfig USER_IDX_SOLR_CONFIG = new 
SolrConfig(USER_IDX_CONFIG_FILE);
             IndexSchema USER_IDX_SCHEMA = new 
IndexSchema(USER_IDX_SOLR_CONFIG, USER_IDX_SCHEMA_FILE, null);
             CoreContainer USER_IDX_CONTAINER = new CoreContainer(new 
SolrResourceLoader(SolrIndexer.USER_IDX_SOLR_HOME));
             CoreDescriptor USER_IDX_CORE_DESCRIPTOR = new 
CoreDescriptor(USER_IDX_CONTAINER, USER_IDX_CORE_NAME, 
USER_IDX_SOLR_CONFIG.getResourceLoader()
                     .getInstanceDir());
             
USER_IDX_CORE_DESCRIPTOR.setConfigName(USER_IDX_SOLR_CONFIG.getResourceName()); 

             
USER_IDX_CORE_DESCRIPTOR.setSchemaName(USER_IDX_SCHEMA.getResourceName());
             USER_IDX_CORE = new SolrCore(null, USER_IDX_DATA_DIR, 
USER_IDX_SOLR_CONFIG, USER_IDX_SCHEMA, USER_IDX_CORE_DESCRIPTOR);
             USER_IDX_CONTAINER.register(USER_IDX_CORE_NAME, 
USER_IDX_CORE, false);
             SearchComponent tvComp = 
USER_IDX_CORE.getSearchComponent("tvComponent");

             ModifiableSolrParams params = new ModifiableSolrParams();
             params.add(CommonParams.Q, FIELD_USER_ID + ":" + userId);
             params.add(CommonParams.QT, "tvrh");
             params.add(TermVectorParams.TF, "true");
             params.add(TermVectorComponent.COMPONENT_NAME, "true");
             SolrRequestHandler handler = 
USER_IDX_CORE.getRequestHandler("tvrh");
             SolrQueryResponse rsp;
             rsp = new SolrQueryResponse();
             rsp.add("responseHeader", new SimpleOrderedMap());
             handler.handleRequest(new 
LocalSolrQueryRequest(USER_IDX_CORE, params), rsp);

             NamedList terms = (NamedList) ((NamedList) ((NamedList) 
rsp.getValues().get(TermVectorComponent.TERM_VECTORS)).getVal(0)).get(FIELD_USER_ALL); 

             if (terms != null) {
                 for (int i = 0; i < terms.size(); i++) {
                     NamedList freq = (NamedList) terms.getVal(i);
                     freqMap.put(terms.getName(i), 
freq.getVal(0).toString());
                 }
             }
         } catch (Exception e) {
             e.printStackTrace();
         } finally {
             try {
                 USER_IDX_CORE.close();
                 USER_IDX_CONTAINER.shutdown();
             } catch (Exception e) {
                 e.printStackTrace();
             }
         }

         return freqMap;
}

Also, USER_IDX_CONTAINER.shutdown(); throws a NullPointerException 
indicating the reference doesn't exist by the time the code execution 
reaches it.

If I don't use thie snippet
             try {
             USER_IDX_CORE.close();
             USER_IDX_CONTAINER.shutdown();
             } catch (Exception e) {
                 e.printStackTrace();
             }
I get a similar POSSIBLE RESORUCE LEAK!!! message that says SolrCore 
wasn't closed.

Am calling this code via a message queue, and no concurrent calls happen.

Thanks,
Karthik.