| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 88 of 308 | 71% | 7 of 16 | 56% | 10 | 21 | 17 | 63 | 3 | 13 |
| writeHeader(DataOutput, long, int) | | 63% | | 50% | 1 | 2 | 5 | 14 | 0 | 1 |
| addOffset(long) | | 47% | | 50% | 1 | 2 | 3 | 6 | 0 | 1 |
| doPrepare() | | 79% | | 66% | 2 | 4 | 4 | 17 | 0 | 1 |
| open(long, long) | | 80% | | 50% | 3 | 4 | 1 | 8 | 0 | 1 |
| chunkOffsetBy(int) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| resetAndTruncate(int) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| doAbort(Throwable) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| CompressionMetadata.Writer(CompressionParams, File) | | 100% | n/a | 0 | 1 | 0 | 7 | 0 | 1 | |
| finalizeLength(long, int) | | 100% | n/a | 0 | 1 | 0 | 3 | 0 | 1 | |
| open(CompressionParams, File) | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 | |
| doPostCleanup(Throwable) | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 | |
| doCommit(Throwable) | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 | |
| static {...} | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |