[Foundation-l] Data retention

Joe Szilagyi szilagyi at gmail.com
Thu Sep 18 17:45:05 UTC 2008


On Wed, Sep 17, 2008 at 2:58 PM, Anthony <wikimail at inbox.org> wrote:

> On Wed, Sep 17, 2008 at 12:36 PM, Thomas Dalton <thomas.dalton at gmail.com
> >wrote:
>
> > > So there is a one percent chance of initiating a checkuser data purge,
> > > and a 0.99 chance that all data will remain intact for the time being.
> > > This 99% may seem high, but it becomes negligible over a month. I
> > > don't know what the exact odds is as I cannot find a calculator that
> > > gives me a non-zero result for "0.99 ^ (6.5 million)" [4].
> >
> > 0.99^6500000=5.819478586x10^-28372
> >
> > To put that in perspective, if we'd done this every month since the
> > universe began (about 14 billion years ago), the probability of there
> > being at least one month in which it didn't get purged would be...
> > hmmm... "0". So much for Maple...
> >
>
> I thought the checkuser data was moved out of the recentchanges table.


That is what has been said around the chatter lines. Was this documented in
the SVN somewhere if so, and approved? For all Wikis? Just some?

- Joe


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