168377: Error during log flush: treat as heuristic hazard, not as rollback
We've refined exception handling for the rare case where flushing a commit record to the log fails.
176189: Reap: avoid connection reuse in nonxa
Although unlikely, reaping would attempt to mark the connection as reusable before it was destroyed in the pool. In theory this could give race conditions so we have improved that.
176244: XAResourceTransaction.commit/rollback: log warnings only once
We used to log two times the same warning in some exceptional cases, this has now been improved.
175998: XAResourceTransaction.commit/rollback: treat -6 (XAER_PROTO error) separately
This kind of exception can happen after a reap and does not have to lead to useless warnings, so we treat this separately now.