[ZODB-Dev] ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)
jim at zope.com
Thu Dec 10 14:07:06 EST 2009
On Thu, Dec 10, 2009 at 1:50 PM, Marius Gedminas <marius at gedmin.as> wrote:
> On Thu, Dec 10, 2009 at 12:41:11PM -0500, Jim Fulton wrote:
>> On Thu, Dec 10, 2009 at 11:54 AM, Marius Gedminas <marius at gedmin.as> wrote:
>> In 3.9 for FileStorage, if you give a starting tid that is toward the
>> end of the file,
>> it will scan backward, saving a lot of time.
> Ah, but how can I get a valid tid that is toward the end of the file?
> I assume that if I give a tid that doesn't exist, I'll get an error --
> which is the behavior oldstate() exhibits -- rather than the next
> existing transaction after that timestamp, or I could fudge by getting
> the current timestamp and subtracting 24 hours.
No, the iterator starts at the first transactions who's tid is >= the start tid.
So, guess a time and use repr(ZODB.TimeStamp.TimeStamp(...))
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