Our Jenkins has some 2500 jobs, the majority of them connected to Gerrit projects with Gerrit Trigger plugin.
When restarting Jenkins, the Jenkins job queue is filled with some 500 jobs, which have already been run before! In other words: the Gerrit Trigger plugin seems to forget that Jenkins has run theses jobs before.
We experienced the same behavior in the passed when we stopped the Gerrit server in the Jenkins Gerrit Trigger configuration and then restarted it.