I configed the Gerrit Trigger plugin on jenkins based on the article https://wiki.jenkins-ci.org/display/JENKINS/Gerrit+Trigger.
On git plugin, I set Refspec to refs/changes/*:refs/changes/* and 'Branches to build' to $GERRIT_REFSPEC.
The job can be triggered whenever new patch set is created. However, the changes to this build contains all the changes (can show max to 1024 changes in total).
This issue bothers me a lot because I'm supposed to send email only to the committer instead of sending emails to all the people contributing to that changelog.
Same issue happened in this url: https://groups.google.com/forum/#!topic/jenkinsci-users/KKITzpqG5_s