Piotr Sarna 0338e14814 database: change insert to upsert in concurrency tests ...

Using insert() was a violation of our API, kind of, because
inserts are not expected to be called twice on the same id.
Instead, update or upsert should delete the version first,
and that's what's done in this patch.

At the same time, write-write conflict detection needed to be
implemented, because we started hitting it with rollback().

Finally, garbage collection is modified to actually work
and garbage-collect row versions. Without it, the number of tracked
row versions very quickly goes out of hand.

2023-06-13 15:52:28 +02:00

..

mvcc

database: change insert to upsert in concurrency tests

2023-06-13 15:52:28 +02:00