| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Julien Rouhaud <rjuju123(at)gmail(dot)com> |
| Cc: | Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: pgsql: Track block level checksum failures in pg_stat_database |
| Date: | 2019-04-30 21:56:47 |
| Message-ID: | 27245.1556661407@sss.pgh.pa.us |
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Julien Rouhaud <rjuju123(at)gmail(dot)com> writes:
> On Tue, Apr 30, 2019 at 6:33 PM Tomas Vondra
> <tomas(dot)vondra(at)2ndquadrant(dot)com> wrote:
>> It seems this commit forgot to add PgStat_MsgChecksumFailure to the
>> PgStat_Msg union.
> Oops, indeed. That's embarrassing. Trivial fix attached if that helps.
Seems like this exposes a generic weakness in the way pgstat.c is coded.
I'm inclined to adjust the switch logic in PgstatCollectorMain along
the lines of
- pgstat_recv_inquiry((PgStat_MsgInquiry *) &msg, len);
+ pgstat_recv_inquiry(&msg.msg_inquiry, len);
so that you *couldn't* forget to extend the union, as long as you
followed the existing code's style.
regards, tom lane
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