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Bug 360057

Summary:	Update installation fails
Product:	[Eclipse Project] Equinox	Reporter:	Holger Knust <holger>
Component:	p2	Assignee:	P2 Inbox <equinox.p2-inbox>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	major
Priority:	P3	CC:	daniel_megert, thomas, tom.schindl, zerui007
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Linux
Whiteboard:

Description Holger Knust

2011-10-05 19:50:21 EDT

Build Identifier: 20110615-0604

The updater fails with:

'Updating Software' has encountered a problem.

An error occurred while collecting items to be installed
session context was:(profile=epp.package.jee, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
Comparison method violates its general contract!
Comparison method violates its general contract!


Reproducible: Always

Steps to Reproduce:
1. Ran "Check for available updates"
2. Selected both updates choices, i.e. "Eclipse IDE for Java EE Developers (1.4.1.20110909-1818)" & "m2e Maven Integration for Eclipse (1.0.100.20110804-1717)"
3.Selected Finish and error occurrs during update process

Comment 1 Thomas Schindl

2011-10-06 02:17:26 EDT

I got the same exception when i used jdk 7 and it went away by going back to my jdk-6 install.

Comment 2 Dani Megert

2011-10-06 04:52:56 EDT

If you don't want to fallback to JRE 6 you can also use the following VM argument:
-Djava.util.Arrays.useLegacyMergeSort=true

*** This bug has been marked as a duplicate of bug 317785 ***

Comment 3 Holger Knust

2011-10-06 07:13:56 EDT

Thanks, Dani that worked!

I was a bit confused when I saw the original bug report was closed and marked as fixed but the issue still occurred. Using your workaround, I was able to upgrade to a version that includes the fix (hopefully).

Comment 4 Traca Zerui

2012-08-17 15:01:28 EDT

Hi Dani Megert .

I am having the same problem.and because i am new with ecplipse, could you tell me , please, where exactly to put (-Djava.util.Arrays.useLegacyMergeSort=true) ?

I´ve tried the command: "eclipse -Djava.util.Arrays.useLegacyMergeSort=true" but the issue persist.

Thanks and best regards.

Traca

Comment 5 Thomas Hallgren

2012-08-17 18:10:34 EDT

Try:

eclipse -vmargs -Djava.util.Arrays.useLegacyMergeSort=true

Comment 6 Traca Zerui

2012-08-17 20:25:55 EDT

Thanks Thomas.

it did not work.

thanks anyway.


(In reply to comment #5)
> Try:
> 
> eclipse -vmargs -Djava.util.Arrays.useLegacyMergeSort=true