Re: pg_restore causing deadlocks on partitioned tables

Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> writes:
> On 2020-Sep-14, Tom Lane wrote:
>> Hm, this seems related to 2ba5b2db7, but not the same thing.
>> Alvaro, any thoughts?

> So apparently when we go to restore the table data for the partition,
> the TRUNCATE deadlocks with the PK addition ... that's pretty odd;
> shouldn't the constraint restore have waited until the data had been
> fully loaded?

Yeah, that's certainly the design expectation. Missing dependency?

If memory serves, which it may not given my undercaffeinated state,
we would not expect there to be a direct dependency link between the
constraint and the table data "object". What there should be is
dependencies forcing the data to be restored before the post-data
boundary pseudo-object, and the constraint after the boundary.
I'm half guessing that that's being mucked up for partitioned tables.

regards, tom lane