Bug 595802 - During a server upgrade process, changes made on the agent are lost.
Summary: During a server upgrade process, changes made on the agent are lost.
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: RHQ Project
Classification: Other
Component: Documentation
Version: 3.0.0
Hardware: All
OS: All
medium
high vote
Target Milestone: ---
: ---
Assignee: Deon Ballard
QA Contact: Corey Welton
URL:
Whiteboard:
Depends On:
Blocks: 573732 jon24-docs jon-sprint10-bugs
TreeView+ depends on / blocked
 
Reported: 2010-05-25 16:12 UTC by Heiko W. Rupp
Modified: 2010-08-12 16:48 UTC (History)
4 users (show)

Fixed In Version: 2.4
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2010-08-12 16:48:45 UTC


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Links
System ID Priority Status Summary Last Updated
Red Hat Bugzilla 595727 None None None Never

Description Heiko W. Rupp 2010-05-25 16:12:40 UTC
Take a 1.3 RHQ server and upgrade to 3.0

Remote comm services show exceptions:

2010-05-25 16:26:53,627 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/jboss-remoting-servlet-invoker].[ServerInvokerServlet]] Servlet.service() for servlet ServerInvokerServlet threw exception
java.io.InvalidClassException: org.rhq.core.domain.configuration.Configuration; Serializable incompatible with Externalizable


and 
java.io.InvalidClassException: org.rhq.core.domain.measurement.MeasurementReport; Serializable incompatible with Externalizable

Comment 1 Greg Hinkle 2010-05-25 16:29:31 UTC
This is an expected error. The serial compatibility of many of the domain objects as been broken. The agent, once it is upgrade, is supposed to detect that the .dat file is no good and start up clean.

Comment 2 Heiko W. Rupp 2010-05-25 17:32:30 UTC
See log file of https://bugzilla.redhat.com/show_bug.cgi?id=595727



About comment #1: this means that users will loose all measurement data and config changes since shutting down the old server and having started the new one. We need to highlight this in the release notes.

Comment 3 Charles Crouch 2010-05-26 13:53:31 UTC
Ok, this is reasonable and just needs to be documentated

Comment 4 Heiko W. Rupp 2010-05-26 14:30:38 UTC
Assigning to Deon for documentation purposes.

Deon, please ping me for input.

Comment 5 Deon Ballard 2010-06-22 15:54:59 UTC
This is in the release notes as a known issue for upgrade/install:
http://www.redhat.com/docs/en-US/JBoss_ON/2.4/rel-notes/html/Known-Issues-with-this-release.html#upgrade-install-issues

I also have a warning note alluding to the monitoring data loss in the upgrade section of the install guide:
http://www.redhat.com/docs/en-US/JBoss_ON/2.4/install/html/upgrading.html

Changing to ON_QA.

Comment 6 John Mazzitelli 2010-07-19 13:43:42 UTC
BTW: this has always been documented on our community wiki page here in the yellow box:

http://rhq-project.org/display/JOPR2/Upgrading+the+Server

"Loss of Data
Loss of minimal monitoring data is inevitable given the down-time involved in shutting down instances of the RHQ Agents during the upgrade process. In addition, if you have a resource in inventory corresponding to the RHQ Server itself, upgrading RHQ will entail the loss of all monitoring data for that resource."

Comment 7 Corey Welton 2010-07-19 18:50:07 UTC
QA Verified these changes.

Comment 8 Corey Welton 2010-08-12 16:48:45 UTC
Mass-closure of verified bugs against JON.


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