# [Codecov](https://codecov.io/gh/apache/incubator-airflow/pull/3911?src=pr&el=h1) Report > Merging > [#3911](https://codecov.io/gh/apache/incubator-airflow/pull/3911?src=pr&el=desc) > into > [master](https://codecov.io/gh/apache/incubator-airflow/commit/8038f88b60a659caad67fa29531446ce9d9bd74f?src=pr&el=desc) > will **decrease** coverage by `0.02%`. > The diff coverage is `n/a`.
[](https://codecov.io/gh/apache/incubator-airflow/pull/3911?src=pr&el=tree) ```diff @@ Coverage Diff @@ ## master #3911 +/- ## ========================================== - Coverage 77.58% 77.56% -0.03% ========================================== Files 200 200 Lines 15970 15969 -1 ========================================== - Hits 12391 12387 -4 - Misses 3579 3582 +3 ``` | [Impacted Files](https://codecov.io/gh/apache/incubator-airflow/pull/3911?src=pr&el=tree) | Coverage Δ | | |---|---|---| | [airflow/utils/db.py](https://codecov.io/gh/apache/incubator-airflow/pull/3911/diff?src=pr&el=tree#diff-YWlyZmxvdy91dGlscy9kYi5weQ==) | `33.6% <ø> (+0.26%)` | :arrow_up: | | [airflow/utils/tests.py](https://codecov.io/gh/apache/incubator-airflow/pull/3911/diff?src=pr&el=tree#diff-YWlyZmxvdy91dGlscy90ZXN0cy5weQ==) | `53.84% <0%> (-30.77%)` | :arrow_down: | | [airflow/hooks/mysql\_hook.py](https://codecov.io/gh/apache/incubator-airflow/pull/3911/diff?src=pr&el=tree#diff-YWlyZmxvdy9ob29rcy9teXNxbF9ob29rLnB5) | `76% <0%> (-2%)` | :arrow_down: | | [airflow/configuration.py](https://codecov.io/gh/apache/incubator-airflow/pull/3911/diff?src=pr&el=tree#diff-YWlyZmxvdy9jb25maWd1cmF0aW9uLnB5) | `89.25% <0%> (+0.37%)` | :arrow_up: | ------ [Continue to review full report at Codecov](https://codecov.io/gh/apache/incubator-airflow/pull/3911?src=pr&el=continue). > **Legend** - [Click here to learn > more](https://docs.codecov.io/docs/codecov-delta) > `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data` > Powered by > [Codecov](https://codecov.io/gh/apache/incubator-airflow/pull/3911?src=pr&el=footer). > Last update > [8038f88...a38e833](https://codecov.io/gh/apache/incubator-airflow/pull/3911?src=pr&el=lastupdated). > Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments). [ Full content available at: https://github.com/apache/incubator-airflow/pull/3911 ] This message was relayed via gitbox.apache.org for [email protected]
