Shawn Heisey created SOLR-7771:
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Summary: Classloader problem with "solr.XXX" class names and jars
in SOLR_HOME/lib
Key: SOLR-7771
URL: https://issues.apache.org/jira/browse/SOLR-7771
Project: Solr
Issue Type: Bug
Affects Versions: 5.2.1
Environment: C:\Users\elyograg\Downloads\solr-5.2.1>java -version
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)
Reporter: Shawn Heisey
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:
{noformat}
bin\solr start
bin\solr create -c foo -d sample_techproducts_configs
bin\solr stop -all
{noformat}
Add the following to server\foo\conf\schema.xml, just before the </schema> end
tag:
{noformat}
<fieldType name="icu_test" class="solr.TextField">
<analyzer>
<tokenizer class="solr.ICUTokenizerFactory"/>
</analyzer>
</fieldType>
{noformat}
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.
{noformat}
bin\solr start
{noformat}
Note an exception in the logging tab:
java.lang.NoClassDefFoundError:
org/apache/lucene/analysis/icu/segmentation/ICUTokenizer
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.
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