Hi All,
I'm going to give a try again to my apps on neo4j with the current
1.4.M03 implementations.
After a while I got this stack trace for which I hope someone could
give me a clue:
org.neo4j.graphdb.TransactionFailureException: Unable to commit transaction
at
org.neo4j.kernel.TopLevelTransaction.finish(TopLevelTransaction.java:104)
at
my.services.graphdb.Neo4jSourceImpl.addNodes(Neo4jSourceImpl.java:734)
at $Neo4jSource_1306fa8fc0b.addNodes($Neo4jSource_1306fa8fc0b.java)
at
my.services.input.RowLineProcessorImpl.processLogLines(RowLineProcessorImpl.java:86)
at
$RowLineProcessor_1306fa8fc11.processLogLines($RowLineProcessor_1306fa8fc11.java)
at
$RowLineProcessor_1306fa8fc0f.processLogLines($RowLineProcessor_1306fa8fc0f.java)
at
my.services.input.PickUpPollerImpl$DirPoller.run(PickUpPollerImpl.java:168)
at java.util.TimerThread.mainLoop(Timer.java:534)
at java.util.TimerThread.run(Timer.java:484)
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)
... 8 more
Caused by: javax.transaction.xa.XAException: Unknown
xid[GlobalId[NEOKERNL|9147195978689142839|809], BranchId[ 52 49 52 49
52 49 ]]
at
org.neo4j.kernel.impl.transaction.xaframework.XaResourceManager.rollback(XaResourceManager.java:470)
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)
... 11 more
This are the command line options used to start the JVM:
-Djava.awt.headless=true -XX:MaxPermSize=512m -Xms512m -Xmx2048m
The box has 8G of RAM
At the time of the exception the db had 4482380 nodes and 94613402
relationships, a lot of my relations goes to a single node.
The operations as usual are simple insert in the DB with some checks
on Index (RelationalIndex and plain Index).
Any help is really appreciated
Cheers
--
Massimo
http://meridio.blogspot.com
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