| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods | Missed | Classes |
| Total | 76 of 1,091 | 93% | 16 of 64 | 75% | 13 | 76 | 9 | 219 | 0 | 43 | 0 | 6 |
| Grouping.java | | 90% | | 69% | 13 | 65 | 9 | 148 | 0 | 38 | 0 | 3 |
| GroupingGroupCombine.java | | 100% | | 100% | 0 | 5 | 0 | 37 | 0 | 2 | 0 | 1 |
| GroupingGroupReduce.java | | 100% | | 100% | 0 | 5 | 0 | 30 | 0 | 2 | 0 | 1 |
| GroupingStrategy.java | | 100% | n/a | 0 | 1 | 0 | 4 | 0 | 1 | 0 | 1 |