title: rpm -i says already installed, but rpm -e says not installed
body: <p>I'm trying to test out an RPM I wrote for Jmeter on CentOS. I followed some guides online and when I do 'sudo rpm --install jmeter.i386.rpm' it says the package is already installed. However when I do 'sudo rpm --erase jmeter.i386.rpm' it says the package is not installed. How can I resolve this issue?</p>