| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
| Cc: | ITAGAKI Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: rmgr hooks and contrib/rmgr_hook |
| Date: | 2008-09-02 15:39:29 |
| Message-ID: | 14451.1220369969@sss.pgh.pa.us |
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| Lists: | pgsql-hackers pgsql-patches |
Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> On Tue, 2008-09-02 at 18:30 +0900, ITAGAKI Takahiro wrote:
>> How about adding a new variable "recovery_preload_libaries" like as
>> shared_preload_libraries? Rmgr libs in it are loaded only in startup
>> process and only if recovery is needed.
> Good point. If others agree, I will re-implement this way.
Aside from the objections raised by Heikki, I'm not seeing the use-case
for an rmgr that only executes during recovery; in fact I'm not entirely
sure that I see a use-case for this entire patch. Where are the WAL
records that the "loadable rmgr" processes going to come from?
regards, tom lane
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