i removed 
<searchComponent name="elevator"
class="org.apache.solr.handler.component.QueryElevationComponent" >
 
     <str name="queryFieldType">string</str>
    <str name="config-file">elevate.xml</str>
  </searchComponent>

from solrconfig.xml but it is showing the following exception:

java.lang.NullPointerException
        at
org.apache.solr.handler.dataimport.DataImporter.identifyPk(DataImporter.java:152)
        at
org.apache.solr.handler.dataimport.DataImporter.<init>(DataImporter.java:111)
        at
org.apache.solr.handler.dataimport.DataImportHandler.inform(DataImportHandler.java:113)
        at
org.apache.solr.core.SolrResourceLoader.inform(SolrResourceLoader.java:486)
        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:588)
        at org.apache.solr.core.CoreContainer.create(CoreContainer.java:428)
        at org.apache.solr.core.CoreContainer.load(CoreContainer.java:278)
        at
org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:117)
        at
org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:83)
        at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:99)
        at 
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40)
        at
org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:594)
        at org.mortbay.jetty.servlet.Context.startContext(Context.java:139)
        at
org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1218)
        at
org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:500)
        at 
org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
        at 
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40)
        at
org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:147)
        at
org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:161)
        at 
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40)
        at
org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:147)
        at 
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40)
        at
org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:117)
        at org.mortbay.jetty.Server.doStart(Server.java:210)
        at 
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40)
        at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:929)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.mortbay.start.Main.invokeMain(Main.java:183)
        at org.mortbay.start.Main.start(Main.java:497)
        at org.mortbay.start.Main.main(Main.java:115)




-----
Thanks & Regards
Romi
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