[Neo4j] Database left in locked state when an exception is thrown during upgrade
This is not a huge deal, since the real problem is that the database cannot be updated, but I thought I would share in case this can occur in other scenarios. In my case, I have a database that I created with build 1.5m02 that I am opening with release 1.5. According to the error message, I must not have shut down the database properly prior to upgrade. If I attempt this a second time in the same process I get a different exception that implies the database is still locked. It seems to me like this operation should have been attempted inside a try block with a finally block that performs an unlock. Here are the stack traces: First attempt: Caused by: org.neo4j.graphdb.TransactionFailureException: Could not create data source [nioneodb], see nested exception for cause of error at org.neo4j.kernel.impl.transaction.TxModule.registerDataSource(TxModule.java:158) at org.neo4j.kernel.GraphDbInstance.start(GraphDbInstance.java:105) at org.neo4j.kernel.EmbeddedGraphDbImpl.init(EmbeddedGraphDbImpl.java:190) at org.neo4j.kernel.EmbeddedGraphDatabase.init(EmbeddedGraphDatabase.java:80) at com.g1.dcg.graph.neo4j.NeoGraph.init(NeoGraph.java:128) ... 43 more Caused by: java.lang.IllegalStateException: Mismatching store version found (Uknown while expecting v0.A.0) and the store is not cleanly shutdown. Recover the database with the previous database version and then attempt to upgrade at org.neo4j.kernel.impl.nioneo.store.NeoStore.checkVersion(NeoStore.java:125) at org.neo4j.kernel.impl.nioneo.store.CommonAbstractStore.init(CommonAbstractStore.java:104) at org.neo4j.kernel.impl.nioneo.store.AbstractStore.init(AbstractStore.java:120) at org.neo4j.kernel.impl.nioneo.store.NeoStore.init(NeoStore.java:78) at org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaDataSource.init(NeoStoreXaDataSource.java:165) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.neo4j.kernel.impl.transaction.XaDataSourceManager.create(XaDataSourceManager.java:77) at org.neo4j.kernel.impl.transaction.TxModule.registerDataSource(TxModule.java:152) ... 47 more Second attempt in same process: Caused by: org.neo4j.graphdb.TransactionFailureException: Could not create data source [nioneodb], see nested exception for cause of error at org.neo4j.kernel.impl.transaction.TxModule.registerDataSource(TxModule.java:158) at org.neo4j.kernel.GraphDbInstance.start(GraphDbInstance.java:105) at org.neo4j.kernel.EmbeddedGraphDbImpl.init(EmbeddedGraphDbImpl.java:190) at org.neo4j.kernel.EmbeddedGraphDatabase.init(EmbeddedGraphDatabase.java:80) at com.g1.dcg.graph.neo4j.NeoGraph.init(NeoGraph.java:128) ... 43 more Caused by: java.lang.IllegalStateException: Unable to lock store [E:\Spectrum\server\modules\graph\db\graph\neostore], this is usually a result of some other Neo4j kernel running using the same store. at org.neo4j.kernel.impl.nioneo.store.CommonAbstractStore.checkStorage(CommonAbstractStore.java:175) at org.neo4j.kernel.impl.nioneo.store.CommonAbstractStore.init(CommonAbstractStore.java:103) at org.neo4j.kernel.impl.nioneo.store.AbstractStore.init(AbstractStore.java:120) at org.neo4j.kernel.impl.nioneo.store.NeoStore.init(NeoStore.java:78) at org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaDataSource.init(NeoStoreXaDataSource.java:165) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.neo4j.kernel.impl.transaction.XaDataSourceManager.create(XaDataSourceManager.java:77) at org.neo4j.kernel.impl.transaction.TxModule.registerDataSource(TxModule.java:152) ... 47 more Paul Jackson, Principal Software Engineer Pitney Bowes Business Insight 4200 Parliament Place | Suite 600 | Lanham, MD 20706-1844 USA O: 301.918.0850 | M: 703.862.0120 | www.pb.com paul.jack...@pb.com Every connection is a new opportunity(tm) Please consider the environment before printing or forwarding this email. If you do print this email, please recycle the paper. This email message may contain confidential, proprietary and/or privileged information. It is intended only for the use of the intended recipient(s). If you have received it in error, please immediately advise the sender by reply email and then delete this email message. Any disclosure, copying, distribution or use of the information
Re: [Neo4j] Database left in locked state when an exception is thrown during upgrade
Paul, I think this is fixed in SNAPSHOT, and 1.6.M03 is coming out this week hopefully. Could you please try after the release? Cheers, /peter neubauer Google: neubauer.peter Skype: peter.neubauer Phone: +46 704 106975 LinkedIn: http://www.linkedin.com/in/neubauer Twitter: @peterneubauer Tungle: tungle.me/peterneubauer brew install neo4j neo4j start heroku addons:add neo4j On Wed, Jan 11, 2012 at 5:37 PM, Paul A. Jackson paul.jack...@pb.com wrote: This is not a huge deal, since the real problem is that the database cannot be updated, but I thought I would share in case this can occur in other scenarios. In my case, I have a database that I created with build 1.5m02 that I am opening with release 1.5. According to the error message, I must not have shut down the database properly prior to upgrade. If I attempt this a second time in the same process I get a different exception that implies the database is still locked. It seems to me like this operation should have been attempted inside a try block with a finally block that performs an unlock. Here are the stack traces: First attempt: Caused by: org.neo4j.graphdb.TransactionFailureException: Could not create data source [nioneodb], see nested exception for cause of error at org.neo4j.kernel.impl.transaction.TxModule.registerDataSource(TxModule.java:158) at org.neo4j.kernel.GraphDbInstance.start(GraphDbInstance.java:105) at org.neo4j.kernel.EmbeddedGraphDbImpl.init(EmbeddedGraphDbImpl.java:190) at org.neo4j.kernel.EmbeddedGraphDatabase.init(EmbeddedGraphDatabase.java:80) at com.g1.dcg.graph.neo4j.NeoGraph.init(NeoGraph.java:128) ... 43 more Caused by: java.lang.IllegalStateException: Mismatching store version found (Uknown while expecting v0.A.0) and the store is not cleanly shutdown. Recover the database with the previous database version and then attempt to upgrade at org.neo4j.kernel.impl.nioneo.store.NeoStore.checkVersion(NeoStore.java:125) at org.neo4j.kernel.impl.nioneo.store.CommonAbstractStore.init(CommonAbstractStore.java:104) at org.neo4j.kernel.impl.nioneo.store.AbstractStore.init(AbstractStore.java:120) at org.neo4j.kernel.impl.nioneo.store.NeoStore.init(NeoStore.java:78) at org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaDataSource.init(NeoStoreXaDataSource.java:165) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.neo4j.kernel.impl.transaction.XaDataSourceManager.create(XaDataSourceManager.java:77) at org.neo4j.kernel.impl.transaction.TxModule.registerDataSource(TxModule.java:152) ... 47 more Second attempt in same process: Caused by: org.neo4j.graphdb.TransactionFailureException: Could not create data source [nioneodb], see nested exception for cause of error at org.neo4j.kernel.impl.transaction.TxModule.registerDataSource(TxModule.java:158) at org.neo4j.kernel.GraphDbInstance.start(GraphDbInstance.java:105) at org.neo4j.kernel.EmbeddedGraphDbImpl.init(EmbeddedGraphDbImpl.java:190) at org.neo4j.kernel.EmbeddedGraphDatabase.init(EmbeddedGraphDatabase.java:80) at com.g1.dcg.graph.neo4j.NeoGraph.init(NeoGraph.java:128) ... 43 more Caused by: java.lang.IllegalStateException: Unable to lock store [E:\Spectrum\server\modules\graph\db\graph\neostore], this is usually a result of some other Neo4j kernel running using the same store. at org.neo4j.kernel.impl.nioneo.store.CommonAbstractStore.checkStorage(CommonAbstractStore.java:175) at org.neo4j.kernel.impl.nioneo.store.CommonAbstractStore.init(CommonAbstractStore.java:103) at org.neo4j.kernel.impl.nioneo.store.AbstractStore.init(AbstractStore.java:120) at org.neo4j.kernel.impl.nioneo.store.NeoStore.init(NeoStore.java:78) at org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaDataSource.init(NeoStoreXaDataSource.java:165) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.neo4j.kernel.impl.transaction.XaDataSourceManager.create(XaDataSourceManager.java:77) at org.neo4j.kernel.impl.transaction.TxModule.registerDataSource(TxModule.java:152) ... 47 more Paul Jackson, Principal Software Engineer Pitney Bowes Business Insight 4200 Parliament Place | Suite 600 | Lanham, MD 20706-1844 USA O: 301.918.0850 | M: 703.862.0120 | www.pb.com
