よくわからないエラー。。

Junit書いて実行したらいきなり出たエラー。
未解決だけど、残しておきます。

org.apache.solr.common.SolrException: no segments* file found in org.apache.lucene.store.FSDirectory@/solr/person/data/index: files: java.io.FileNotFoundException: no segments* file found in org.apache.lucene.store.FSDirectory@/solr/person/data/index: files: at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:604) at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:272) at org.apache.lucene.index.IndexWriter.init(IndexWriter.java:1158) at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:938) at org.apache.solr.update.SolrIndexWriter.<init>(SolrIndexWriter.java:116) at org.apache.solr.update.UpdateHandler.createMainIndexWriter(UpdateHandler.java:122) at org.apache.solr.update.DirectUpdateHandler2.openWriter(DirectUpdateHandler2.java:167) at org.apache.solr.update.DirectUpdateHandler2.delete(DirectUpdateHandler2.java:272) at org.apache.solr.update.processor.RunUpdateProcessor.processDelete(RunUpdateProcessorFactory.java:66) at org.apache.solr.handler.XmlUpdateRequestHandler.processDelete(XmlUpdateRequestHandler.java:285) at org.apache.solr.handler.XmlUpdateRequestHandler.processUpdate(XmlUpdateRequestHandler.java:230) at org.apache.solr.handler.XmlUpdateRequestHandler.handleRequestBody(XmlUpdateRequestHandler.java:123) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1204) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:303) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:232) 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:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619)

no segments* file found in org.apache.lucene.store.FSDirectory@/solr/person/data/index: files: java.io.FileNotFoundException: no segments* file found in org.apache.lucene.store.FSDirectory@/solr/person/data/index: files: at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:604) at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:272) at org.apache.lucene.index.IndexWriter.init(IndexWriter.java:1158) at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:938) at org.apache.solr.update.SolrIndexWriter.<init>(SolrIndexWriter.java:116) at org.apache.solr.update.UpdateHandler.createMainIndexWriter(UpdateHandler.java:122) at org.apache.solr.update.DirectUpdateHandler2.openWriter(DirectUpdateHandler2.java:167) at org.apache.solr.update.DirectUpdateHandler2.delete(DirectUpdateHandler2.java:272) at org.apache.solr.update.processor.RunUpdateProcessor.processDelete(RunUpdateProcessorFactory.java:66) at org.apache.solr.handler.XmlUpdateRequestHandler.processDelete(XmlUpdateRequestHandler.java:285) at org.apache.solr.handler.XmlUpdateRequestHandler.processUpdate(XmlUpdateRequestHandler.java:230) at org.apache.solr.handler.XmlUpdateRequestHandler.handleRequestBody(XmlUpdateRequestHandler.java:123) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1204) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:303) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:232) 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:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619)

request: http://192.168.1.52:8080/solr/person/update?wt=javabin&version=2.2

at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:343)
at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:183)
at org.apache.solr.client.solrj.request.UpdateRequest.process(UpdateRequest.java:217)
at org.apache.solr.client.solrj.SolrServer.deleteById(SolrServer.java:97)
at gol.rental.solr.PersonIndexManager.deleteIndex(PersonIndexManager.java:58)
at gol.rental.service.person.PersonSearchServiceTest.tearDown(PersonSearchServiceTest.java:127)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.internal.runners.MethodRoadie.runAfters(MethodRoadie.java:138)
at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:92)
at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:77)
at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:42)
at org.junit.internal.runners.JUnit4ClassRunner.invokeTestMethod(JUnit4ClassRunner.java:88)
at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51)
at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44)
at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27)
at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37)
at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:42)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)