Hi Peter, On Tue, Feb 4, 2020 at 9:13 AM Peter Geoghegan <p...@bowt.ie> wrote: > On Thu, Jan 30, 2020 at 2:34 PM Thomas Munro <tmu...@postgresql.org> wrote: > > Handle lack of DSM slots in parallel btree build. > > > > If no DSM slots are available, a ParallelContext can still be > > created, but its seg pointer is NULL. Teach parallel btree build > > to cope with that by falling back to a regular non-parallel build, > > to avoid crashing with a segmentation fault. > > Uh, this seems to have completely disabled parallel index builds on > the master branch.
Oops. The check needs to move down below InitializeParallelDSM(), and release any extra resources that might have been acquired (snapshot?). I will do some testing in a few hours and post a fix.
