| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 98 of 98 | 0% | 8 of 8 | 0% | 7 | 7 | 16 | 16 | 3 | 3 |
| doIO(Reporter, String, long) | | 0% | | 0% | 3 | 3 | 6 | 6 | 1 | 1 |
| getIOStream(String) | | 0% | | 0% | 2 | 2 | 6 | 6 | 1 | 1 |
| TestDFSIO.AppendMapper() | | 0% | | 0% | 2 | 2 | 4 | 4 | 1 | 1 |