I get that too, but sometimes. I got the feeling that it relates to the number of @Transactional annotations that get nested. I might be completely wrong. But I got rid of it by revising my annotations.
Alfredas On Wed, Mar 30, 2011 at 11:40 PM, rick.bullo...@burningskysoftware.com <rick.bullo...@burningskysoftware.com> wrote: > Sounds like a bug to me. > > ----- Reply message ----- > From: "Axel Morgner" <a...@morgner.de> > Date: Wed, Mar 30, 2011 1:23 pm > Subject: [Neo4j] Lucene index: Too many open files > To: "Neo4j user discussions" <user@lists.neo4j.org> > > Hi, > > during stress tests, I got a "Too many open files" message (see detailed > stack trace below). Server is a Debian Linux 2.6.26 x86_64 w/ 24 GB RAM, > Core i7 which handles the load with ease. > > cat /proc/sys/fs/file-max > 2399285 > > The parameter fs.file-max was already set very high, but I'll increase > it further and see if it will happen again. > > fs.file-max = 6815744 > fs.aio-max-nr = 1048576 > > Are there recommendations of linux kernel parameters? Or/and would you > recommend other things to circumvent that, f.e. using multiple indexes > instead of one? > > And it seems to me that finishing a Neo4j transaction will always > trigger a LuceneTransaction.doCommit, even if there was no update on > index (I try to avoid for the log nodes). Can this be switched off? > > Thanks and greetings > > Axel > > > [1] Stack trace > > java.lang.RuntimeException: java.io.FileNotFoundException: > /opt/structr/t5s/db/index/lucene/node/fulltextAllNodes/_ngl.fdx (Too > many open files) > at > org.neo4j.index.impl.lucene.LuceneTransaction.doCommit(LuceneTransaction.java:272) > at > org.neo4j.kernel.impl.transaction.xaframework.XaTransaction.commit(XaTransaction.java:318) > at > org.neo4j.kernel.impl.transaction.xaframework.XaResourceManager.commit(XaResourceManager.java:446) > at > org.neo4j.kernel.impl.transaction.xaframework.XaResourceHelpImpl.commit(XaResourceHelpImpl.java:64) > at > org.neo4j.kernel.impl.transaction.TransactionImpl.doCommit(TransactionImpl.java:516) > at > org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:621) > at > org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:584) > at > org.neo4j.kernel.impl.transaction.TransactionImpl.commit(TransactionImpl.java:104) > at > org.neo4j.kernel.TopLevelTransaction.finish(TopLevelTransaction.java:85) > at > org.structr.core.node.TransactionCommand.execute(TransactionCommand.java:37) > at org.structr.core.entity.AbstractNode.commit(AbstractNode.java:1048) > at org.structr.core.log.LogService.flushQueue(LogService.java:101) > at org.structr.core.log.LogService.run(LogService.java:73) > Caused by: java.io.FileNotFoundException: > /opt/structr/t5s/db/index/lucene/node/fulltextAllNodes/_ngl.fdx (Too > many open files) > at java.io.RandomAccessFile.open(Native Method) > at java.io.RandomAccessFile.<init>(RandomAccessFile.java:233) > at > org.apache.lucene.store.SimpleFSDirectory$SimpleFSIndexOutput.<init>(SimpleFSDirectory.java:180) > at > org.apache.lucene.store.NIOFSDirectory.createOutput(NIOFSDirectory.java:74) > at org.apache.lucene.index.FieldsWriter.<init>(FieldsWriter.java:86) > at > > _______________________________________________ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > _______________________________________________ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
