what if tracker url changes?

[Aaron Bentley]

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On 11/18/2010 06:04 AM, Frits Jalvingh wrote:
> I do not see a single reason *why* bug specs need to be globally unique.

They need to be globally unique so that they are not ambiguous.  So that
when a user encounters them, they are able to do something useful with
them.  If you and I each use the identifier "foo" to refer to different
things, a third party who encounters the identifier will not know which
is intended.

globally-unique identifiers are a fundamental requirement for
distributed version control.  Revision-ids are unique.  File-ids are
unique.  User-ids and bug-ids are best-effort unique.  It is the only
way we know to provide a coherent system where entities can create their
identifiers independently.

Aaron
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