Markus Junginger wrote:

Thanks for your fast response.

...

Thanks for the report. Unfortunately your suggested fix means the rpage test will always be skipped on read-only cursors, which will break the rpage tracking if the txn is still alive.

Does that mean it's not trivial to fix and will take some time?

Correct. And I'm still on holiday this week, won't be looking deeper into this for a while.

It's a last outstanding issue for a release, so I guess we have to find a work around until it's properly fixed?

Yes. Best is to use mdb_txn_reset/renew instead of txn_abort.