[ https://issues.apache.org/jira/browse/LUCENE-4751?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Simon Willnauer resolved LUCENE-4751. ------------------------------------- Resolution: Won't Fix The problem here is that you are getting this critical TooManyOpenFilesException which already brings down your site. You should raise the open files limit and I recommend you to upgrade to a newer lucene version. 2.9.2 is pretty old. > IndexReader close throwing NullPointerException > ----------------------------------------------- > > Key: LUCENE-4751 > URL: https://issues.apache.org/jira/browse/LUCENE-4751 > Project: Lucene - Core > Issue Type: Bug > Components: core/search > Affects Versions: 2.9.2 > Environment: RedHat > Reporter: Anusha Rao > > Hi, > Has anyone seen the NullPointerException as shown below > before? We have used Lucene to build a public site search functionality. > All the IndexReader objects in there are closed appropriately except one that > throws the following error and results in (too many files open) exception. > This brings the entire site down. > The lucene version we are using is lucene-core-2.9.2.jar > > Any idea what could cause this exception? > > > java.lang.NullPointerException > at > org.apache.lucene.index.SegmentReader$Norm.decRef(SegmentReader.java:393) > at > org.apache.lucene.index.SegmentReader.doClose(SegmentReader.java:868) > at org.apache.lucene.index.IndexReader.decRef(IndexReader.java:170) > at > org.apache.lucene.index.DirectoryReader.doClose(DirectoryReader.java:803) > at org.apache.lucene.index.IndexReader.decRef(IndexReader.java:170) > at org.apache.lucene.index.IndexReader.close(IndexReader.java:1302) > at search.Searcher.search(Searcher.java:387) // the close in this > class does not execute > -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org