Hudson understands PMD's Copy Paste Detector (CPD) analysis report XML format. When this option is configured and your build runs the maven goal pmd:cpd then Hudson provides useful information about analysis results, such as historical result trend, module and package statistics, web UI for viewing analysis reports and warnings, and so on.

This plug-in is not invoked for failed builds, it is only called for stable or unstable builds (i.e., a build with failed tests).