title: Solr 4.4.0 is giving error code 500
body: <p>Solr 4.4.0 is giving this error
  can anyone help me??</p>
  
  <pre><code>HTTP Status 500 - {msg=SolrCore 'collection1' is not available due to init failure: Unable to use updateLog: _version_field must exist in schema, using indexed="true" stored="true" and multiValued="false" (_version_ does not exist),trace=org.apache.solr.common.SolrException: SolrCore 'collection1' is not available due to init failure: Unable to use updateLog: _version_field must exist in schema, using indexed="true" stored="true" and multiValued="false" (_version_ does not exist)
  at org.apache.solr.core.CoreContainer.getCore(CoreContainer.java:860)
  at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:251)
  at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:158)
  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
  at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
  at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
  at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
  at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
  at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
  at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
  at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
  at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
  at java.lang.Thread.run(Thread.java:724) Caused by: org.apache.solr.common.SolrException: Unable to use updateLog: _version_field must exist in schema, using indexed="true" stored="true" and multiValued="false" (_version_ does not exist)
  at org.apache.solr.core.SolrCore.&lt;init&gt;(SolrCore.java:835)
  at org.apache.solr.core.SolrCore.&lt;init&gt;(SolrCore.java:629)
  at org.apache.solr.core.CoreContainer.createFromLocal(CoreContainer.java:622)
  at org.apache.solr.core.CoreContainer.create(CoreContainer.java:657)
  at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:364)
  at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:356)
  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
  at java.util.concurrent.FutureTask.run(FutureTask.java:166)
  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
  at java.util.concurrent.FutureTask.run(FutureTask.java:166)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) ... 1 more Caused by: org.apache.solr.common.SolrException: Unable to use updateLog: _version_field must exist in schema, using indexed="true" stored="true" and multiValued="false" (_version_ does not exist)
  at org.apache.solr.update.UpdateLog.init(UpdateLog.java:267)
  at org.apache.solr.update.UpdateHandler.&lt;init&gt;(UpdateHandler.java:134)
  at org.apache.solr.update.UpdateHandler.&lt;init&gt;(UpdateHandler.java:94)
  at org.apache.solr.update.DirectUpdateHandler2.&lt;init&gt;(DirectUpdateHandler2.java:96)
  at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
  at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
  at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
  at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:537)
  at org.apache.solr.core.SolrCore.createUpdateHandler(SolrCore.java:607)
  at org.apache.solr.core.SolrCore.&lt;init&gt;(SolrCore.java:819) ... 13 more Caused by: org.apache.solr.common.SolrException: _version_field must exist in schema, using indexed="true" stored="true" and multiValued="false" (_version_ does not exist)
  at org.apache.solr.update.VersionInfo.getAndCheckVersionField(VersionInfo.java:56)
  at org.apache.solr.update.VersionInfo.&lt;init&gt;(VersionInfo.java:82)
  at org.apache.solr.update.UpdateLog.init(UpdateLog.java:264) ... 23 more ,code=500}
  </code></pre>