How to fix IndexNotFoundException: no * segment files?

Question

I write my own code to index some data files myself. It all worked. As soon as I changed the schema.xml file, now I get an internal server error, I do not know how to interpret it.

 Internal Server Error request: http://127.0.0.1:8080/solr/update?wt=javabin&version=2 at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:427) at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:249) at org.apache.solr.client.solrj.request.AbstractUpdateRequest.process(AbstractUpdateRequest.java:105) at org.apache.solr.client.solrj.SolrServer.add(SolrServer.java:69) at org.apache.solr.client.solrj.SolrServer.add(SolrServer.java:54) at solr.client.SolrClient.index(SolrClient.java:109) at solr.client.SolrClient.main(SolrClient.java:26) 

Then I look in the directory log file, it says that no kernel has been created ...

  Jun 26, 2012 2:09:21 AM org.apache.solr.core.SolrCore close INFO: [] CLOSING SolrCore org.apache.solr.core.SolrCore@5675b3ee Jun 26, 2012 2:09:21 AM org.apache.solr.common.SolrException log SEVERE: java.lang.NullPointerException at org.apache.solr.core.SolrCore.close(SolrCore.java:712) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:599) at org.apache.solr.core.CoreContainer.create(CoreContainer.java:483) at org.apache.solr.core.CoreContainer.load(CoreContainer.java:335) at org.apache.solr.core.CoreContainer.load(CoreContainer.java:219) at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:161) at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:96) at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:277) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:103) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4638) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5294) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:649) at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1585) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:680) Jun 26, 2012 2:09:21 AM org.apache.solr.core.SolrCore closeSearcher INFO: [] Closing main searcher on request. Jun 26, 2012 2:09:21 AM org.apache.solr.common.SolrException log SEVERE: org.apache.solr.common.SolrException at org.apache.solr.core.SolrCore.<init>(SolrCore.java:600) at org.apache.solr.core.CoreContainer.create(CoreContainer.java:483) at org.apache.solr.core.CoreContainer.load(CoreContainer.java:335) at org.apache.solr.core.CoreContainer.load(CoreContainer.java:219) at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:161) at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:96) at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:277) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:103) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4638) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5294) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:649) at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1585) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:680) Caused by: java.lang.RuntimeException: org.apache.lucene.index.IndexNotFoundException: no segments* file found in org.apache.lucene.store.NIOFSDirectory@ /Users/nan/solr-tomcat/solr/data/index lockFactory=org.apache.lucene.store.NativeFSLockFactory@11396ef7 : files: [] at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1104) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:585) ... 23 more Caused by: org.apache.lucene.index.IndexNotFoundException: no segments* file found in org.apache.lucene.store.NIOFSDirectory@ /Users/nan/solr-tomcat/solr/data/index lockFactory=org.apache.lucene.store.NativeFSLockFactory@11396ef7 : files: [] at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:667) at org.apache.lucene.index.DirectoryReader.open(DirectoryReader.java:72) at org.apache.lucene.index.IndexReader.open(IndexReader.java:375) at org.apache.solr.core.StandardIndexReaderFactory.newReader(StandardIndexReaderFactory.java:38) at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1093) ... 24 more 

Updated directory log file above ... yes, I deleted the index data, since I thought I was going to create a new index ... and I did it earlier today, but I still have not seen this curious error ... as it should Can I fix it ?: (

Thanks a lot!!! (^ infinitive times)

Answer 1

As you can see from your log file, Solr / Lucene cannot find the segments file in the data directory.

If you delete the data directory, Solr will automatically create a new index (empty, of course) automatically at startup. From the error it seems that your data directory is there, but with some missing file. Since I realized that you are ready to review everything, you can fix the error by simply deleting the index directory and then reindexing.

Answer 2

An Exception IndexNotFoundException signals that the index was not found in the directory. Perhaps because the directory is empty, it may also indicate an index corruption.

So you should:

• Delete the index directory or restore data from backups.
• Reboot the server (or at least reload the configuration).