Found the exception logs that match the notifications in http://localhost:8080/solr-app/#/~logging as quoted below:
> 14:30:00 SEVERE SolrCore org.apache.solr.common.SolrException: Error > opening new searcher > 14:30:00 SEVERE SolrDispatchFilter > null:org.apache.solr.common.SolrException: Error opening new searcher Mar 12, 2013 2:30:00 PM org.apache.solr.common.SolrException log SEVERE: org.apache.solr.common.SolrException: Error opening new searcher at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1423) at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1535) at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1312) at org.apache.solr.update.DirectUpdateHandler2.commit(DirectUpdateHandler2.java:558) at org.apache.solr.update.processor.RunUpdateProcessor.processCommit(RunUpdateProcessorFactory.java:95) at org.apache.solr.update.processor.UpdateRequestProcessor.processCommit(UpdateRequestProcessor.java:64) at org.apache.solr.update.processor.DistributedUpdateProcessor.processCommit(DistributedUpdateProcessor.java:1060) at org.apache.solr.update.processor.LogUpdateProcessor.processCommit(LogUpdateProcessorFactory.java:157) at org.apache.solr.handler.RequestHandlerUtils.handleCommit(RequestHandlerUtils.java:69) at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:68) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1816) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:448) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:269) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:722) Caused by: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:583) at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:597) at org.apache.lucene.index.IndexWriter.nrtIsCurrent(IndexWriter.java:4148) at org.apache.lucene.index.StandardDirectoryReader.doOpenFromWriter(StandardDirectoryReader.java:266) at org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:245) at org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:235) at org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:169) at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1368) ... 28 more Mar 12, 2013 2:30:00 PM org.apache.solr.common.SolrException log SEVERE: null:org.apache.solr.common.SolrException: Error opening new searcher at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1423) at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1535) at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1312) at org.apache.solr.update.DirectUpdateHandler2.commit(DirectUpdateHandler2.java:558) at org.apache.solr.update.processor.RunUpdateProcessor.processCommit(RunUpdateProcessorFactory.java:95) at org.apache.solr.update.processor.UpdateRequestProcessor.processCommit(UpdateRequestProcessor.java:64) at org.apache.solr.update.processor.DistributedUpdateProcessor.processCommit(DistributedUpdateProcessor.java:1060) at org.apache.solr.update.processor.LogUpdateProcessor.processCommit(LogUpdateProcessorFactory.java:157) at org.apache.solr.handler.RequestHandlerUtils.handleCommit(RequestHandlerUtils.java:69) at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:68) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1816) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:448) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:269) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:722) Caused by: org.apache.lucene.store.AlreadyClosedException: this IndexWriter is closed at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:583) at org.apache.lucene.index.IndexWriter.ensureOpen(IndexWriter.java:597) at org.apache.lucene.index.IndexWriter.nrtIsCurrent(IndexWriter.java:4148) at org.apache.lucene.index.StandardDirectoryReader.doOpenFromWriter(StandardDirectoryReader.java:266) at org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:245) at org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:235) at org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:169) at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1368) ... 28 more -- View this message in context: http://lucene.472066.n3.nabble.com/Solr-4-1-4-2-SolrException-Error-opening-new-searcher-tp4046543p4047225.html Sent from the Solr - User mailing list archive at Nabble.com.