The computation of this metric suffers from some corner cases - which are not that rare in fact:
- when no file has changed in a folder but there are new issues due to newly activated rules
- when only 1 file has slightly be updated in a folder
In such cases, the value that is computed can be completely crazy. We should take time to improve this. Comments on
SONAR-5876 already give some details on why we've got those issues.