HTTP Status 500 – Internal Server Error


Type Exception Report

Message Failed to initialise Lucene for searching.

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

javax.servlet.ServletException: Failed to initialise Lucene for searching. 
	net.susa.cfs.SearchServlet.init(SearchServlet.java:43)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:770)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415)
	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
	java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.base/java.lang.Thread.run(Thread.java:844)

Root Cause

org.apache.lucene.index.IndexNotFoundException: no segments* file found in MMapDirectory@/tmp/lucene_idx2 lockFactory=org.apache.lucene.store.NativeFSLockFactory@35e20685: files: []
	org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:683)
	org.apache.lucene.index.StandardDirectoryReader.open(StandardDirectoryReader.java:81)
	org.apache.lucene.index.DirectoryReader.open(DirectoryReader.java:63)
	net.susa.cfs.lucene.LuceneSearch.<init>(LuceneSearch.java:50)
	net.susa.cfs.SearchServlet.init(SearchServlet.java:39)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:770)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415)
	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
	java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.base/java.lang.Thread.run(Thread.java:844)

Note The full stack trace of the root cause is available in the server logs.


Apache Tomcat/9.0.12