Re: (ITS#7754) Unaligned MDB_DUPSORT sub-pages

Monday, 9 December 2013


h.b.furuseth(a)usit.uio.no wrote:
...
 I wrote:
> (...)
> A fix with a format change would be to put the padding byte in front
> of the sub-page instead of at the end. 
Sounds fine to me. back-mdb only uses even-sized keys with DUPSORT, so this 
change has no impact on OpenLDAP. And most likely no one else has hit this 
situation yet otherwise they'd be crashing.

...
 Ignore next paragraph:
> One fix with a format change could be that the data item gets uneven
> size too, with a padding byte in front of the sub-page.

 Because that's repeated as the 2nd alternative after this one:

> The most general way would be to do that in all nodes with uneven-
> sized key and even-sized data:
 

-- 
   -- Howard Chu
   CTO, Symas Corp.           http://www.symas.com
   Director, Highland Sun     http://highlandsun.com/hyc/
   Chief Architect, OpenLDAP  http://www.openldap.org/project/

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