On Wed, Nov 22, 2023 at 4:51 PM Tomas Vondra <tomas.von...@enterprisedb.com> wrote: > > On 11/22/23 11:38, Amit Kapila wrote: > > > > Okay. IIUC, what's going on here is that the apply worker acquires > > AccessShareLock on pg_subscription to update rel state for one of the > > tables say tbl-1, and then for another table say tbl-2, it started > > waiting for a state change via wait_for_relation_state_change(). I > > think here the fix is to commit the transaction before we go for a > > wait. I guess we need something along the lines of what is proposed in > > [1] though we have solved the problem in that thread in some other > > way.. > > > > Possibly. I haven't checked if the commit might have some unexpected > consequences, but I can confirm I can no longer reproduce the deadlock > with the patch applied. >
Thanks for the verification. Offhand, I don't see any problem with doing a commit at that place but will try to think some more about it. I think we may want to call pgstat_report_stat(false) after commit to avoid a long delay in stats. I haven't verified but I think this will be a problem in back-branches as well. -- With Regards, Amit Kapila.
