Den onsdagen den 9:e mars 2011 skrev David Montag<david.mon...@neotechnology.com>: > Alex, > > That is caused by a bug. The bug has been fixed after 1.2. If you upgrade to > the latest milestone, you will no longer get this exception. Also, the > latest milestone will recover the store to a clean state. Your data will be > safe.
Correct, and go with the M03 milestone first because M04 will introduce changes which requires an upgrade from a cleanly shut down database. > > David > > On Wed, Mar 9, 2011 at 10:26 AM, Axel Morgner <a...@morgner.de> wrote: > >> Hi out there, >> >> is there a caveat when concurrently accessing a lucene index for writing? >> >> From time to time, in rare cases, I'm getting an exception when >> committing and indexing a series of nodes to Neo4j (1.2). The >> transaction is triggered by a log service thread while the main thread >> (web app) concurrently writes updates to the index, too. >> >> After such an exception, the system is unable to recover unless I >> manually remove the lucene, lucene-fulltext and index folders from the >> neo4j directory and start over. Then the system comes up again, and I >> can sucessfully rebuild the index. >> >> Do I have to take care of locking by myself? >> >> Greetings >> >> Axel >> >> [1] >> >> java.lang.NullPointerException >> at >> >> org.neo4j.index.impl.lucene.IndexType$CustomType.removeFromDocument(IndexType.java:165) >> at >> >> org.neo4j.index.impl.lucene.LuceneCommand$RemoveCommand.perform(LuceneCommand.java:228) >> at >> >> org.neo4j.index.impl.lucene.LuceneTransaction.doCommit(LuceneTransaction.java:231) >> at >> >> org.neo4j.kernel.impl.transaction.xaframework.XaTransaction.commit(XaTransaction.java:319) >> at >> >> org.neo4j.kernel.impl.transaction.xaframework.XaResourceManager.commit(XaResourceManager.java:447) >> at >> >> org.neo4j.kernel.impl.transaction.xaframework.XaResourceHelpImpl.commit(XaResourceHelpImpl.java:65) >> at >> >> org.neo4j.kernel.impl.transaction.TransactionImpl.doCommit(TransactionImpl.java:517) >> at >> org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:623) >> at >> org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:586) >> at >> >> org.neo4j.kernel.impl.transaction.TransactionImpl.commit(TransactionImpl.java:105) >> at >> org.neo4j.kernel.TopLevelTransaction.finish(TopLevelTransaction.java:86) >> at >> >> org.structr.core.node.TransactionCommand.execute(TransactionCommand.java:37) >> at org.structr.core.entity.AbstractNode.commit(AbstractNode.java:968) >> at org.structr.core.log.LogService.run(LogService.java:85) >> javax.transaction.xa.XAException: Unknown >> xid[GlobalId[NEOKERNL|-7500914275797900644|1974], BranchId[ 52 49 52 49 >> 52 49 ]] >> at >> >> org.neo4j.kernel.impl.transaction.xaframework.XaResourceManager.rollback(XaResourceManager.java:471) >> at >> >> org.neo4j.kernel.impl.transaction.xaframework.XaResourceHelpImpl.rollback(XaResourceHelpImpl.java:112) >> at >> >> org.neo4j.kernel.impl.transaction.TransactionImpl.doRollback(TransactionImpl.java:534) >> at >> org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:650) >> at >> org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:586) >> at >> >> org.neo4j.kernel.impl.transaction.TransactionImpl.commit(TransactionImpl.java:105) >> at >> org.neo4j.kernel.TopLevelTransaction.finish(TopLevelTransaction.java:86) >> at >> >> org.structr.core.node.TransactionCommand.execute(TransactionCommand.java:37) >> at org.structr.core.entity.AbstractNode.commit(AbstractNode.java:968) >> at org.structr.core.log.LogService.run(LogService.java:85) >> 09.03.2011 18:27:07 org.neo4j.kernel.impl.transaction.TxManager commit >> SCHWERWIEGEND: Unable to rollback transaction. Some resources may be >> commited others not. Neo4j kernel should be SHUTDOWN for resource >> maintance and transaction recovery ----> >> java.lang.NullPointerException >> at >> >> org.neo4j.index.impl.lucene.IndexType$CustomType.removeFromD-- > David Montag > Neo Technology, www.neotechnology.com > Cell: 650.556.4411 > david.mon...@neotechnology.com > _______________________________________________ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > -- Mattias Persson, [matt...@neotechnology.com] Hacker, Neo Technology www.neotechnology.com _______________________________________________ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
