Affects Version/s: 5.2.1
Fix Version/s: None
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
Jars placed in SOLR_HOME/lib seem to be loaded twice, which causes problems trying to use solr.XXXXXX class names in schema.xml.
If the full class name is used, it works.
Steps to recreate on an extracted Solr 5.2.1 download. This was done on Windows, so I used backslashes as path separators:
Add the following to server\foo\conf\schema.xml, just before the </schema> end tag:
Create a new directory – server\solr\lib.
Copy icu4j-54.1.jar and lucene-analyzers-icu-5.2.1.jar from contrib\analysis-extras to server\solr\lib.
Note an exception in the logging tab:
At this point, if the class name is changed from solr.ICUTokenizerFactory to org.apache.lucene.analysis.icu.segmentation.ICUTokenizerFactory and solr is stopped and started, then everything is OK.