Flacky Tests

sql-load/worker_test.go -> TestReadFiles -> skipInvalids
```
Failed
worker_test.go:621: main.out{
        - 	rowCount:  2,
        + 	rowCount:  4,
        - 	skipCount: 4,
        + 	skipCount: 5,
          }
```
This method is heavily threaded and potential isn't waiting for the last process to finish before returning the data. 