On 2019-Oct-05, Alvaro Herrera wrote: > While playing around I noticed that depending on the number of parallel > workers in pg_restore compared to the number of partitions a table has, > restoring an FK fails because the FK itself is restored before the index > partitions have completed restoring. The exact conditions to cause the > failure seem to vary depending on whether the dump is schema-only or not. > > This can seemingly be fixed by having pg_dump make the constraint depend > on the attach of each partition, as in the attached patch. With this > patch I no longer see failures.
Pushed with some additional tweaks. Parallel restore of partitioned tables containing data and unique keys still fails with some deadlock errors, though :-( -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
