On Thu, Feb 13, 2020 at 04:51:01PM +0900, Amit Langote wrote: > On Thu, Feb 13, 2020 at 3:23 AM Justin Pryzby <pry...@telsasoft.com> wrote: > > Forking this thread for two tangential patches which I think are more > > worthwhile than the original topic's patch. > > https://www.postgresql.org/message-id/20200207143935.GP403%40telsasoft.com > > > > Is there a better place to implement assertion from 0002 ? > > I would think the answer to that would be related to the answer of why > you think we need this assert in the first place? > > I know I have made the mistake of not updating relnatts when I added > relispartition, etc. to pg_class, only to be bitten by it in the form > of seemingly random errors/crashes. Is that why?
Right. If adding or removing a column from pg_class (or others) it's necessary not only to add the column in the .h file, and update references like Anum_*, but also to update that catalog's own pg_class.relnatts in pg_class.dat. On the other thead, Alvaro agreed it might be worth experimenting with moving "indisclustered" from boolean in pg_index to an Oid in pg_class. There's not many references to it, so I was able to make most of the necessary changes within an hour .. but spent some multiple of that tracing the crash in initdb, which I would prefer to have failed less obscurely. -- Justin
