Solr 4.4 / Tomcat 6 - DataImportHandler ClassNotFoundException

Question

I am trying to get solr running with tomcat. i had it working with jetty on the same server and now i am moving it to tomcat.

i created a new dir structure for the tomcat version to separate from the working jetty version

I have followed the tutorial I actually have a similar config working on a different server.

I have read the other articles that mention copy all the libs especially solr-dataimporthandler*jar and solr-dataimporthandler-extras*jar to the dir /web/solr/collection2/conf/lib

ls -ls /web/solr/collection2/conf/lib/
 total 6648
   4 drwxr-xr-x. 2 root root    4096 Sep  6 13:34 logs
2652 -rwxr-xr-x. 1 root root 2714189 Sep  6 13:29 ojdbc6.jar
  20 -rwxrwxrwx. 1 root root   17207 Sep  6 12:37 solr-analysis-extras-4.4.0.jar
  32 -rwxrwxrwx. 1 root root   30399 Sep  6 12:37 solr-cell-4.4.0.jar
  52 -rwxrwxrwx. 1 root root   50974 Sep  6 12:37 solr-clustering-4.4.0.jar
2300 -rwxrwxrwx. 1 root root 2354779 Sep  6 12:37 solr-core-4.4.0.jar
 216 -rwxrwxrwx. 1 root root  217247 Sep  6 12:30 solr-dataimporthandler-4.4.0.jar
  32 -rwxrwxrwx. 1 root root   31893 Sep  6 12:30 solr-dataimporthandler-extras-4.4.0.jar
 752 -rwxrwxrwx. 1 root root  767253 Sep  6 12:37 solr-langid-4.4.0.jar
 368 -rwxrwxrwx. 1 root root  375474 Sep  6 12:37 solr-solrj-4.4.0.jar
 156 -rwxrwxrwx. 1 root root  156896 Sep  6 12:37 solr-test-framework-4.4.0.jar
  40 -rwxrwxrwx. 1 root root   39350 Sep  6 12:37 solr-uima-4.4.0.jar
  24 -rwxrwxrwx. 1 root root   20912 Sep  6 12:37 solr-velocity-4.4.0.jar

i have edited /web/solr/collection2/conf/solrconfig.xml and added

<lib dir="/web/solr/collection2/conf/lib" />

BUT... when i try to start tomcat i get::

*10776 [coreLoadExecutor-3-thread-1] ERROR org.apache.solr.core.CoreContainer â Unable to create core: collection2 org.apache.solr.common.SolrException: RequestHandler init failure at org.apache.solr.core.SolrCore.(SolrCore.java:835)

Caused by: org.apache.solr.common.SolrException: RequestHandler init failure at org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:167) at org.apache.solr.core.SolrCore.(SolrCore.java:772)*

I have got to be missing something simple. Is there anything to make the exception more meaningful or any other suggestions on how to debug this?

Thanks Randy

Have you added JDBC jar and solr-dataimporthandler-*.jar in the lib directories? — Amith Koujalgi
hi thanks as mentioned above i added the import jars as well as ojdbc6.jar in /web/solr/collection2/conf/lib. Thats what fixed it for me last time. Thats what is confusing. — randy
possible duplicate of Solr 4.1 DataImportHandler ClassNotFoundException — kenorb

Amith Koujalgi Amith Koujalgi · Accepted Answer · 2013-09-06T19:39:18

In your solrconfig file, add the following line for dataimport

<lib dir="../dist/" regex="solr-dataimporthandler-\d.*\.jar" />

which will add all the jars whose names begin with 'solr-dataimporthandler-'

If you still have trouble, check for the lib and conf directories and provide the appropriate path in your solrconfig.xml

And if you have configured the DIH with a database, make sure that Solr has the necessary libraries (connectors) to connect to the database.

Solr 4.4 / Tomcat 6 - DataImportHandler ClassNotFoundException

1 Answers