afs commented on issue #3488:
URL: https://github.com/apache/jena/issues/3488#issuecomment-3382693089

   Hi @SamuelBoerlin 
   
   There seem to be several potentially different things going on here.
   
   1.
   
   
   > ```
   > Exception in insertPrefixes: Not in a transaction
   > org.apache.jena.dboe.transaction.txn.TransactionException: Not in a 
transaction
   >    at 
org.apache.jena.dboe.transaction.txn.TransactionalComponentLifecycle.checkTxn(TransactionalComponentLifecycle.java:350)
   >    at 
org.apache.jena.dboe.trans.bplustree.BPlusTree.getRootRead(BPlusTree.java:156)
   > . . .
   > ```
   
   Do you happen to know what the CONSTRUCT query is? 
   Have other CONSTRUCT queries succeeded?
   I think this is different problem but made likely to happen around the time 
of compaction finishing. It may (I'm still investigating) leave the system in a 
broken state but something triggered it in the first place.
   
   2.
   
   > ```
   > [12540] **** Exception in compact
   > java.lang.InternalError: a fault occurred in an unsafe memory access 
operation
   >    at org.apache.jena.dboe.base.buffer.BufferBase.copy(BufferBase.java:84)
   >    at 
org.apache.jena.dboe.trans.bplustree.BPTreeRecords.split(BPTreeRecords.java:211)
   > . . . 
   ```
   
   It's inside the JVM to get a `java.lang.InternalError` - it is accessing a 
memory mapped file.
   
   Would it be possible to run without `--add-modules=jdk.incubator.vector` and 
with a 2G heap `-Xmx2G`?
   


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: [email protected]

For queries about this service, please contact Infrastructure at:
[email protected]


---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]

Reply via email to