| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 499 of 499 | 0% | 20 of 20 | 0% | 18 | 18 | 105 | 105 | 8 | 8 |
| testMemoryMerge() | | 0% | n/a | 1 | 1 | 44 | 44 | 1 | 1 | |
| testOnDiskMerger() | | 0% | | 0% | 8 | 8 | 24 | 24 | 1 | 1 |
| testLargeMemoryLimits() | | 0% | | 0% | 3 | 3 | 15 | 15 | 1 | 1 |
| testZeroShuffleMemoryLimitPercent() | | 0% | n/a | 1 | 1 | 6 | 6 | 1 | 1 | |
| verifyReservedMapOutputType(MergeManagerImpl, long, String) | | 0% | n/a | 1 | 1 | 6 | 6 | 1 | 1 | |
| fillOutput(InMemoryMapOutput) | | 0% | | 0% | 2 | 2 | 5 | 5 | 1 | 1 |
| testIoSortDefaults() | | 0% | n/a | 1 | 1 | 4 | 4 | 1 | 1 | |
| TestMergeManager() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 |