java - ClassCastException on cargo running solr with a dataimport-handler -

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i'm having issues on getting solr 4.3.1 run using cargo-maven2-plugin. after fixing classpath issues, i've ended following error:

error org.apache.solr.core.corecontainer - null:org.apache.solr.common.solrexception: unable create core: collection1     @ org.apache.solr.core.corecontainer.recordandthrow(corecontainer.java:1450)     @ org.apache.solr.core.corecontainer.create(corecontainer.java:993)     @ org.apache.solr.core.corecontainer$2.call(corecontainer.java:597)     <...> caused by: org.apache.solr.common.solrexception: requesthandler init failure     @ org.apache.solr.core.solrcore.<init>(solrcore.java:821)     @ org.apache.solr.core.solrcore.<init>(solrcore.java:618)     @ org.apache.solr.core.corecontainer.createfromlocal(corecontainer.java:949)     @ org.apache.solr.core.corecontainer.create(corecontainer.java:984)     ... 10 more caused by: org.apache.solr.common.solrexception: requesthandler init failure     @ org.apache.solr.core.requesthandlers.inithandlersfromconfig(requesthandlers.java:168)     @ org.apache.solr.core.solrcore.<init>(solrcore.java:758)     ... 13 more caused by: org.apache.solr.common.solrexception: error instantiating request handler, org.apache.solr.handler.dataimport.dataimporthandler failed instantiate org.apache.solr.request.solrrequesthandler     @ org.apache.solr.core.solrcore.createinstance(solrcore.java:539)     @ org.apache.solr.core.solrcore.createrequesthandler(solrcore.java:592)     @ org.apache.solr.core.requesthandlers.inithandlersfromconfig(requesthandlers.java:154)     ... 14 more caused by: java.lang.classcastexception: class org.apache.solr.handler.dataimport.dataimporthandler     @ java.lang.class.assubclass(class.java:3037)     @ org.apache.solr.core.solrresourceloader.findclass(solrresourceloader.java:448)     @ org.apache.solr.core.solrresourceloader.findclass(solrresourceloader.java:396)     @ org.apache.solr.core.solrcore.createinstance(solrcore.java:518)     ... 16 more

i've tried tomcat7x , jetty7x containers. if classloader problem, can somehow force container use same classloader maven using?

going through stack trace did google search on 

error instantiating request handler, \ org.apache.solr.handler.dataimport.dataimporthandler \ failed instantiate org.apache.solr.request.solrrequesthandl

and brought following question.

why can't instantiate dataimporthandler in solr on jboss?

there many answers should resolve issue.


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