Re: BUG #16104: Invalid DSA Memory Alloc Request in Parallel Hash
Tomas Vondra <[email protected]>
| Newsgroups | gmane.comp.db.postgresql.bugs |
|---|---|
| Message-ID | <20191210183606.t26c5ypa7bmij3ph@development> |
On Tue, Dec 10, 2019 at 02:35:16PM -0300, Alvaro Herrera wrote: >On 2019-Dec-10, Tomas Vondra wrote: > >> It's probably still a good idea to do this, although I wonder if we >> might start doing this only when actually running out of bits (and use >> the current algorithm by default). But I have no idea if that would be >> any cheaper, and it would add complexity. > >I'm under the impression that this patch is proposed for backpatching, >and that in master we can simply increase the hash width. > Possibly, although AFAIK we don't have that patch yet, and I don't recall any measurements (so it might have overhead too, not sure). But it's true additional complexity might complicate backpatching. regards -- Tomas Vondra http://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services