| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: weird hang while running in HS mode |
| Date: | 2010-05-13 11:05:20 |
| Message-ID: | 1273748720.308.1484.camel@ebony |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Thu, 2010-05-13 at 19:32 +0900, Fujii Masao wrote:
> On Thu, May 13, 2010 at 7:22 PM, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
> > On Thu, 2010-05-13 at 19:08 +0900, Fujii Masao wrote:
> >
> >> I was able to reproduce such a hang by not executing another
> >> transaction after rollback. In this case, walsender cannot replicate
> >> the rollback since it's not in the disk.
> >
> > WALWriter is not active?
>
> WALWriter is active, but unfortunately it doesn't flush all of the WAL
> records in wal_buffers. Please see XLogBackgroundFlush().
Yes, I wrote it. It flushes after at most 3 cycles, stated in comments.
--
Simon Riggs www.2ndQuadrant.com
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Fujii Masao | 2010-05-13 11:13:58 | Re: weird hang while running in HS mode |
| Previous Message | Fujii Masao | 2010-05-13 10:32:29 | Re: weird hang while running in HS mode |