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Bug 421521

Summary:	Already installed computes a very slow solution
Product:	[Eclipse Project] Equinox	Reporter:	Ed Willink <ed>
Component:	p2	Assignee:	P2 Inbox <equinox.p2-inbox>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	normal
Priority:	P3	CC:	krzysztof.daniel, pascal
Version:	3.9.0 Kepler	Keywords:	helpwanted
Target Milestone:	---
Hardware:	PC
OS:	Windows Vista
Whiteboard:	stalebug

Description Ed Willink

2013-11-12 06:17:47 EST

M3: If an attempt is made to install something (e.g. jar:file:/C:/Users/Public/Downloads/Eclipse/4.4M3/mdt-uml2-Update-4.2.0M3.zip!/) that is already installed, P2 starts its very slow search for 15 alternate solutions and eventually concludes operation cannot be completed, software already installed.

This used to be a quick activity. Why is it now so hard?

Comment 1 Krzysztof Daniel

2013-11-12 06:35:07 EST

Hmmm... P2 remediation tries to find a way to help the user to install things, even if they are not installable (f.e. by uninstalling/upgrading other software). There is plenty of alternatives to check, hence the time required.

But you're right that discovering that the software is already installed should end remediation process immediatelly after first failure - because it's a very specific case where we know from the beginning that there is no way of proceeding.

Comment 2 Pascal Rapicault

2013-11-14 21:13:55 EST

Could you please attach the most recent version of the profile file as well as provide a download link for your download?

Comment 3 Ed Willink

2013-11-15 02:00:07 EST

http://www.eclipse.org/modeling/download.php?file=/modeling/mdt/uml2/downloads/drops/4.2.0/S201311110727/mdt-uml2-Update-4.2.0M3.zip

I've no idea what a profile file is in your context. I presume you are not referring to a UML profile.

[I did one update from staging that picked up about 4 projects, reported that it couldn't solve it, computed the 15 part solution more quickly than usual, and reported a solution that was indistinguishable from a clean update.]

Comment 4 Ed Willink

2014-04-29 06:12:31 EDT

And worse: if there are other updates available, the slow solution offers to update many other products without making any change to the redundant installed product. The problem is only diagnosable after rejwecting the offered solution and reverting to 'build my own solution'.

Comment 5 Eclipse Genie

2019-10-19 13:57:00 EDT

This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet.

If you have further information on the current state of the bug, please add it. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant.

--
The automated Eclipse Genie.