| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Noah Misch <noah(at)leadboat(dot)com> |
| Cc: | Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Postgres 9.6 scariest patch tournament |
| Date: | 2016-05-05 18:38:31 |
| Message-ID: | 20160505183831.GA186280@alvherre.pgsql |
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| Lists: | pgsql-hackers |
Alvaro Herrera wrote:
> "Parallel Query" got many mentions; some of them were specific commits
> (such as "parallel infrastructure", "parallel joins", "parallel
> aggregates") and others were more generic. For the generic mentions I
> just chose a few of the most salient patches, but didn't include either
> parallel aggregates nor parallel joins in that list. "LWLock tranches"
> and "Freeze Map" also resulted in several commits appearing in the list
> below. This distorts the results somewhat. I considered redoing the
> results once I noticed the problem, but didn't really want to invest
> *too* much time.
After looking at commits mentioning "parallel", I'm surprised that this
one didn't turn up specifically as a scary commit:
│ a1c1af2a1f6099c039f145c1edb52257f315be51 │ rhaas(at)postgresql(dot)org │ Introduce group locking to prevent parallel processes from deadlocking. │
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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