On Thu, Jun 23, 2011 at 9:08 PM, Mattias Persson
<matt...@neotechnology.com> wrote:
> That should be quite fine. I could try this out locally perhaps. Something
> like:
>
> Index<Node> index = db.index().forNodes("myIndex");
> Transaction tx = db.beginTx();
> Node node = db.createNode();
> for ( int i = 0; i < 250000; i++ )
> {
> index.add(node,"key",i);
> if ( i%10000 == 0 )
> {
> tx.success();
> tx.finish();
> tx = db.beginTx();
> }
> }
>
> ?
I've run the example above and here are the results.
After 603 round of 10000 entries I got an OutOfMemoryError with this
stack trace:
org.neo4j.graphdb.TransactionFailureException: Unable to commit transaction
at
org.neo4j.kernel.TopLevelTransaction.finish(TopLevelTransaction.java:104)
at
statisticheng.services.graphdb.Neo4jSourceImpl.testDbIndexCapabilities(Neo4jSourceImpl.java:271)
at
statisticheng.services.graphdb.Neo4jSourceImpl.<init>(Neo4jSourceImpl.java:241)
at
statisticheng.services.StatistichengModule.buildNeo4jSource(StatistichengModule.java:145)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at
org.apache.tapestry5.ioc.internal.ServiceBuilderMethodInvoker.createObject(ServiceBuilderMethodInvoker.java:64)
at
org.apache.tapestry5.ioc.internal.OperationTrackingObjectCreator$1.invoke(OperationTrackingObjectCreator.java:45)
at
org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:65)
at
org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:68)
at
org.apache.tapestry5.ioc.internal.RegistryImpl.invoke(RegistryImpl.java:1063)
at
org.apache.tapestry5.ioc.internal.OperationTrackingObjectCreator.createObject(OperationTrackingObjectCreator.java:49)
at
org.apache.tapestry5.ioc.internal.SingletonServiceLifecycle.createService(SingletonServiceLifecycle.java:29)
at
org.apache.tapestry5.ioc.internal.LifecycleWrappedServiceCreator.createObject(LifecycleWrappedServiceCreator.java:46)
at
org.apache.tapestry5.ioc.internal.AdvisorStackBuilder.createObject(AdvisorStackBuilder.java:60)
at
org.apache.tapestry5.ioc.internal.InterceptorStackBuilder.createObject(InterceptorStackBuilder.java:52)
at
org.apache.tapestry5.ioc.internal.RecursiveServiceCreationCheckWrapper.createObject(RecursiveServiceCreationCheckWrapper.java:60)
at
org.apache.tapestry5.ioc.internal.OperationTrackingObjectCreator$1.invoke(OperationTrackingObjectCreator.java:45)
at
org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:65)
at
org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:68)
at
org.apache.tapestry5.ioc.internal.RegistryImpl.invoke(RegistryImpl.java:1063)
at
org.apache.tapestry5.ioc.internal.OperationTrackingObjectCreator.createObject(OperationTrackingObjectCreator.java:49)
at
org.apache.tapestry5.ioc.internal.services.JustInTimeObjectCreator.obtainObjectFromCreator(JustInTimeObjectCreator.java:68)
at
org.apache.tapestry5.ioc.internal.services.JustInTimeObjectCreator.createObject(JustInTimeObjectCreator.java:57)
at
org.apache.tapestry5.ioc.internal.services.JustInTimeObjectCreator.eagerLoadService(JustInTimeObjectCreator.java:89)
at
org.apache.tapestry5.ioc.internal.RegistryImpl.performRegistryStartup(RegistryImpl.java:331)
at
org.apache.tapestry5.ioc.internal.RegistryWrapper.performRegistryStartup(RegistryWrapper.java:73)
at org.apache.tapestry5.TapestryFilter.init(TapestryFilter.java:104)
at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at
org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:713)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at
org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1282)
at
org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518)
at
org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:499)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at
org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
at
org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at
org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at
org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:224)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.mortbay.start.Main.invokeMain(Main.java:194)
at org.mortbay.start.Main.start(Main.java:534)
at org.mortbay.start.Main.start(Main.java:441)
at org.mortbay.start.Main.main(Main.java:119)
Caused by: javax.transaction.HeuristicMixedException: Unable to
rollback ---> error in commit: java.lang.OutOfMemoryError: Java heap
space ---> error code for rollback: 0
at
org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:669)
at
org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:588)
at
org.neo4j.kernel.impl.transaction.TransactionImpl.commit(TransactionImpl.java:107)
at
org.neo4j.kernel.TopLevelTransaction.finish(TopLevelTransaction.java:85)
... 54 more
Caused by: javax.transaction.xa.XAException: Transaction already started commit
at
org.neo4j.kernel.impl.transaction.xaframework.XaResourceManager.rollback(XaResourceManager.java:476)
at
org.neo4j.kernel.impl.transaction.xaframework.XaResourceHelpImpl.rollback(XaResourceHelpImpl.java:111)
at
org.neo4j.kernel.impl.transaction.TransactionImpl.doRollback(TransactionImpl.java:533)
at
org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:651)
... 57 more
The error point in my code: "at
statisticheng.services.graphdb.Neo4jSourceImpl.testDbIndexCapabilities(Neo4jSourceImpl.java:271)"
correspond to the tx.finish() just before the new
graphdb.beginTransaction() in the for loop.
Does it helps to understand what's going on?
Thanks a lot
--
Massimo
http://meridio.blogspot.com
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