Bug heat should decay over time

[Graham Binns]

Once the fix for bug 503745 lands, bug heat will be calculated based on the attributes of each bug. However, bug heat will only ever grow over time. To mitigate this, bug heat should decay over time, rather like karma does.

[Martin Pool (mbp)]

Bugs that have ever been marked security critical stick at the top of the list for a long time. For example https://bugs.edge.launchpad.net/bzr/+bug/453104 is a completely boring bug, and decided to be so ~3 weeks ago, but it's still marked as the hottest because it was once critical.

Perhaps the decay thing will change this.

But to me this raises a question about the whole concept of decaying: if something is accidentally qualified as hot and that mistake is fixed, the heat should immediately reflect it.

[Graham Binns (gmb)]

On 17 February 2010 01:26, Martin Pool <email address hidden> wrote:
> Bugs that have ever been marked security critical stick at the top of
> the list for a long time.  For example
> https://bugs.edge.launchpad.net/bzr/+bug/453104 is a completely boring
> bug, and decided to be so ~3 weeks ago, but it's still marked as the
> hottest because it was once critical.

Well, it's still marked as the hottest because heat isn't currently
updating automatically. This is because in order to enable automatic
updates we need to make a change to the DB, and we missed the boat on
getting that change in for 10.01. It will be in 10.02, though.

In the meantime we've got a query that we'll use periodically to
update the heat manually. I'll get that run today and you should see
that bug's heat drop.

> Perhaps the decay thing will change this.
>
> But to me this raises a question about the whole concept of decaying: if
> something is accidentally qualified as hot and that mistake is fixed,
> the heat should immediately reflect it.
>

That's exactly what will happen, it's just that it's not happening
yet. This is separate to heat decay though.

[Diogo Matsubara (matsubara)]

Fixed in devel r10420 <http://bazaar.launchpad.net/~launchpad-pqm/launchpad/devel/revision/10420>