I get ClassCastException when staring tomcat server (Solr configured with
Suggester option enabled)
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Key: SOLR-2737
URL: https://issues.apache.org/jira/browse/SOLR-2737
Project: Solr
Issue Type: Bug
Components: spellchecker
Affects Versions: 3.3
Environment: Windows 7/Apache Tomcat 7/Solr 3.3/JDK 1.6
Reporter: Saurabh Kumar Singh
I get the following stack trace on server startup:
Aug 30, 2011 6:37:44 PM org.apache.solr.common.SolrException log
SEVERE: java.lang.ClassCastException: java.lang.String cannot be cast to
java.lang.Float
at org.apache.solr.spelling.suggest.Suggester.init(Suggester.java:84)
at
org.apache.solr.handler.component.SpellCheckComponent.inform(SpellCheckComponent.java:597)
at
org.apache.solr.core.SolrResourceLoader.inform(SolrResourceLoader.java:522)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:594)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:463)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:316)
at
org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:133)
at
org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:94)
at
org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:273)
at
org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:254)
at
org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:372)
at
org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:98)
at
org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4584)
at
org.apache.catalina.core.StandardContext$2.call(StandardContext.java:5262)
at
org.apache.catalina.core.StandardContext$2.call(StandardContext.java:5257)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Below is the patch for the fix (I did it locally. Please let me know the
criteria of how could I check-in the fix :) )
### Eclipse Workspace Patch 1.0
#P lucene_solr_3_3
Index: solr/src/java/org/apache/solr/spelling/suggest/Suggester.java
===================================================================
--- solr/src/java/org/apache/solr/spelling/suggest/Suggester.java
(revision 1163940)
+++ solr/src/java/org/apache/solr/spelling/suggest/Suggester.java
(working copy)
@@ -81,8 +81,22 @@
public String init(NamedList config, SolrCore core) {
LOG.info("init: " + config);
String name = super.init(config, core);
- threshold = config.get(THRESHOLD_TOKEN_FREQUENCY) == null ? 0.0f
- : (Float)config.get(THRESHOLD_TOKEN_FREQUENCY);
+ Object tokenFrequency = config.get(THRESHOLD_TOKEN_FREQUENCY);
+ if ( config.get(THRESHOLD_TOKEN_FREQUENCY) == null)
+ {
+ threshold = 0.0f;
+ }
+ else
+ {
+ if (tokenFrequency instanceof Number)
+ {
+ threshold = (Float)tokenFrequency;
+ }
+ else if(tokenFrequency instanceof String)
+ {
+ threshold = Float.valueOf((String)tokenFrequency);
+ }
+ }
sourceLocation = (String) config.get(LOCATION);
field = (String)config.get(FIELD);
lookupImpl = (String)config.get(LOOKUP_IMPL);
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