Eclipse Community Forums: EMF » [CDO] Best way to force unlocking view/locking manager

Help

Home

Home » Modeling » EMF » [CDO] Best way to force unlocking view/locking manager

Show: Today's Messages :: Show Polls :: Message Navigator

[CDO] Best way to force unlocking view/locking manager [message #1847025]

Tue, 12 October 2021 13:38

Alain Picard

Messages: 266
Registered: July 2009

Senior Member

Twice in the last month we've had some locks that wouldn't release in production.

The first time we could only identify the thread and part of the stack trace (by default ThreadInfo only shows the top of the stack trace).

The second time we got an OptimisticLockingException and it would never get released, until we restarted everything.

We've now added monitoring as part of the health checks (Felix Health Check) and via console command to track locked views and to report on active locks from the LockingManager.

But our next step is to find a way to kill/disabled/recover from any such situation in the future if it arises again.

Any idea on how best to force a view/transaction down and in the case of locked objects, it seems that this can be a bit broader as it seems to be used by repository and few other places as well.

Thanks
Alain

Report message to a moderator

Re: [CDO] Best way to force unlocking view/locking manager [message #1847028 is a reply to message #1847025]

Tue, 12 October 2021 14:29

Eike Stepper

Messages: 6682
Registered: July 2009

Senior Member

I remember a few bug fixes related to locks being not properly released in certain situations, so upgrading your 4.7 installation might already help.

You can always close a view, transaction, or even entire session from the server:

repository.getSessionManager().getSession(sessionID).getView(viewID).close();

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

Report message to a moderator

Previous Topic:	Improving containment list performance in CDO/EMF
Next Topic:	XCore: Bundle 'org.eclipse.emf.ecore.xcore.lib' cannot be resolved

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Fri Apr 26 13:09:17 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter