I have a problem using the data import handler with apache solr running on ubuntu 12.04 where it failes to load the mysql java driver with the error:
Could not load driver: com.mysql.jdbc.Driver
However I can see that it is loading the required file as during startup it outputs the following:
INFO: Adding 'file:/home/ubuntu/solr-4.1.0/contrib/dataimporthandler/lib/mysql-connector-java.jar' to classloader
So at this point I am a bit stuck... I've also tried putting the connector in the main lib/ folder for my solr setup as well but with no luck...