| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Noah Misch <noah(at)leadboat(dot)com> |
| Cc: | Leonardo Francalanci <m_lists(at)yahoo(dot)it>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: switch UNLOGGED to LOGGED |
| Date: | 2011-05-29 01:33:09 |
| Message-ID: | BANLkTi=d+M8bxzxq0UNa+Cr_mO4uD4DigQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, May 27, 2011 at 6:19 AM, Noah Misch <noah(at)leadboat(dot)com> wrote:
>> So, it's ok to have a log item that is replayed only if
>>
>> WalRcvInProgress()
>>
>> is true?
>
> No, that checks for WAL streaming in particular. A log-shipping standby needs
> the same treatment.
>
>> Is it a correct approach? I couldn't find any other way to
>> find out if we are in a standby or a master...
>
> InArchiveRecovery looks like the right thing, but it's currently static to
> xlog.c. Perhaps exporting that is the way to go.
Why is it necessary to replay the operation only on the slave? Can we
just use XLOG_HEAP_NEWPAGE?
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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