Re: Parallell hashjoin sometimes ignores temp_tablespaces

Magnus Hagander <magnus@hagander.net> writes:
> On Fri, Jul 3, 2020 at 6:12 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> The lack of documentation seems to be my fault, so I'm willing to pick
>> this up unless somebody else wants it.

> If the comments I included in that patch are enough, I can just commit
> those along with it. Otherwise, please do :)

Being once burned, I had something more like the attached in mind.

BTW, looking at this, I'm kind of wondering about the other code path
in SharedFileSetInit:

        if (fileset->ntablespaces == 0)
        {
                fileset->tablespaces[0] = DEFAULTTABLESPACE_OID;
                fileset->ntablespaces = 1;
        }

Shouldn't that be inserting MyDatabaseTableSpace?  I see no other places
anywhere that are forcing temp stuff into pg_default like this.