> On 22 Dec 2017, at 22:53, Jeremy Finzel <finzelj@xxxxxxxxx> wrote: > > 2017-12-22 15:48:07.669 CST,"CREATE INDEX",2017-12-22 15:48:02 CST,8/32,0,ERROR,40P01,"deadlock detected","Process 4470 waits for ShareLock on virtual transaction 4/262; blocked by process 4466. > Process 4466 waits for ShareLock on virtual transaction 8/32; blocked by process 4470. > Process 4470: CREATE INDEX CONCURRENTLY index_foo_on_created_at ON foo USING btree (created_at); > Process 4466: CREATE INDEX CONCURRENTLY index_bar_on_id ON bar USING btree (id);","See server log for query details.",,,,"CREATE INDEX CONCURRENTLY index_foo_on_created_at ON foo USING btree (created_at);",,,"" If I read these logs correctly, you are creating the exact same index on foo (created_at) in both processes, which is just what you were trying to prevent doing. Alban Hertroys -- If you can't see the forest for the trees, cut the trees and you'll find there is no forest.
