Increasing max # of backup blocks (was Re: GiST insert algorithm rewrite)

On 13.12.2010 15:20, Heikki Linnakangas wrote:
> On 13.12.2010 15:04, Robert Haas wrote:
>> On Mon, Dec 13, 2010 at 7:09 AM, Heikki Linnakangas
>> <heikki.linnakangas@enterprisedb.com> wrote:
>>> Attached is an updated patch, but that issue with limited number of
>>> backup
>>> blocks needs to be resolved. The straightforward way would be to
>>> change the
>>> WAL format to increase the limit.
>>
>> Eh, is that going to bloat WAL?
>
> Nah.

Or did you mean, if changing the WAL format to raise the limit would 
bloat WAL? Depends on how it's done, of course. Assuming MAXALIGN=4, 
there's 2 wasted bytes in XLogRecord at the moment that we could take 
into use without making the header bigger.

--   Heikki Linnakangas  EnterpriseDB   http://www.enterprisedb.com