Github user ajs6f commented on the issue:
https://github.com/apache/jena/pull/153
We usually use `try-finally` for the transaction cycle, i.e.
```
try {
transactionalThing.begin(readWrite);
//do some stuff
transactionalThing.commit(); // if a write transaction
}
finally {
transactionalThing.end();
}
```
Looking at `onThrowable` it looks like if the `Transactional txn` throws
anything other than a `JenaTransactionException` out of `txn.abort()`, then
`txn.end()` will never get called. Does that open a whole for `txn` to never
actually finish aborting/ending?
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