Re: Add a filed to PageHeaderData

On Tue, Jun 24, 2014 at 2:28 PM, Greg Stark <stark(at)mit(dot)edu> wrote:

> On Tue, Jun 24, 2014 at 12:02 AM, Soroosh Sardari
> <soroosh(dot)sardari(at)gmail(dot)com> wrote:
> > Is there any rule for adding a field to PageHeaderData?
>
> Not really. It's a pretty internal thing, not something we expect
> people to be doing all the time.
>
> The only rule I can think of is that you should bump some version
> numbers such as the page format version and probably the catalog
> version. But that's probably irrelevant to your problem. It sounds
> like you have a bug in your code but you haven't posted enough
> information to say much more.
>
>
Out of curiosity, I actually tried adding a char[20] field in the page
header because just like you I thought this should be completely internal,
as long as the field is added before the pd_linp[] field. But I get the
same failure that OP is reporting. I wonder if its a bug in gist index
build, though I could not spot anything at the first glance. FWIW changing
the char[] from 20 to 22 or 24 does not cause any failure in rangetypes
test. So I am thinking its some alignment issue (mine is a 64 bit build)

Thanks,
Pavan
--
Pavan Deolasee
http://www.linkedin.com/in/pavandeolasee