cubicweb-worker #2236995 deadlock on abort/validation error [resolved]

this is a racy thing ...

pb is, when an abort happens, the abort_operation/fire_transition thing can try to update an entity edited in the enclosing and not yet rollbacked transaction

the mystery is why we haven't been bitten before ....

done in0.2.1
load left0.000
closed by#2a8fa9da1918 [entities] defer abortion to a time the calling session it garanteed to be closed, hence killing deadlock possibilies (closes #2236995)