lijo created SOLR-8076:
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Summary: SEVERE: Unable to load Transformer: foo.FieldTransformer
Key: SOLR-8076
URL: https://issues.apache.org/jira/browse/SOLR-8076
Project: Solr
Issue Type: Bug
Environment: Solr Version :- 4.2.1.2013.03.26.08.26.55
OS : -Ubuntu
Reporter: lijo
While creating an custom transformer for data importer ,I am getting the
following error. I made a custom jar and placed it in solr/lib and put it in
dist/ folder also.But both times it is giving the error.
I can see the jar is loading when solr started as follows.
Sep 20, 2015 8:59:47 PM org.apache.solr.core.SolrResourceLoader
replaceClassLoader
INFO: Adding 'file:/var/www/solr/example/solr/lib/foo.jar' to classloader
Error is :-
SEVERE: Unable to load Transformer: foo.FieldTransformer
java.lang.ClassNotFoundException: Unable to load foo.FieldTransformer or
org.apache.solr.handler.dataimport.foo.FieldTransformer
at
org.apache.solr.handler.dataimport.DocBuilder.loadClass(DocBuilder.java:911)
at
org.apache.solr.handler.dataimport.EntityProcessorWrapper.loadTransformers(EntityProcessorWrapper.java:107)
at
org.apache.solr.handler.dataimport.EntityProcessorWrapper.applyTransformer(EntityProcessorWrapper.java:168)
at
org.apache.solr.handler.dataimport.EntityProcessorWrapper.nextRow(EntityProcessorWrapper.java:256)
at
org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:465)
at
org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:404)
at
org.apache.solr.handler.dataimport.DocBuilder.doFullDump(DocBuilder.java:319)
at
org.apache.solr.handler.dataimport.DocBuilder.execute(DocBuilder.java:227)
at
org.apache.solr.handler.dataimport.DataImporter.doFullImport(DataImporter.java:422)
at
org.apache.solr.handler.dataimport.DataImporter.runCmd(DataImporter.java:487)
at
org.apache.solr.handler.dataimport.DataImporter$1.run(DataImporter.java:468)
Caused by: org.apache.solr.common.SolrException: Error loading class
'foo.FieldTransformer'
at
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:440)
at
org.apache.solr.handler.dataimport.DocBuilder.loadClass(DocBuilder.java:901)
... 10 more
Caused by: java.lang.ClassNotFoundException: foo.FieldTransformer
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:793)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:274)
at
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:424)
... 11 more
I made changes in data-config file as follows.
<entity name="products" transformer="foo.FieldTransformer" query = "select
.....'">
My java file contains the following code.
package foo;
import java.util.Map;
public class FieldTransformer {
public Object transformRow(Map<String, Object> row) {
row.put("field_"+row.get("third_price"), row.get("id"));
return row;
}
}
and jar contains the following folder structure.
foo/FieldTransformer.class
META-INF/MANIFEST.MF
What is the issue
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