Symptoms

During the JIRA startup, the following error appears in the atlassian-jira.log:

2012-04-16 16:16:21,113 QuartzWorker-1 ERROR ServiceRunner    upmPluginUpgradeCheckJob [sal.jira.scheduling.JiraPluginSchedulerService] Unable to load a service descriptor for the job 'upmPluginUpgradeCheckJob'. This is usually the result of an obsolete service that can removed in the Administration section.

Cause

A service (Administration > System > Services) that was used in a previous version of JIRA has became obsolete and is no longer required.

Resolution

1. Go to Administration > System > Services.
2. Take a screenshot to keep track of those settings, in case the incorrect service is accidentally deleted.
3. Delete the service(s) (in this example, upmPluginUpgradeCheckJob).