Are automated static analysis tools worth it? An investigation into relative warning density and external software quality on the example of Apache open source projects

This is the dataset for the publication "Are automated static analysis tools worth it? An investigation into relative warning density and external software quality on the example of Apache open source projects". It contains just-in-time defect-prediction style data in jit_data2.tar.gz as well as warnings generated by PMD 6.31.0 in warnings_data3.tar.gz. Further information and scripts for generating the plots and tables can be found in the replication kit.