[MNT] Fix race condition in OpenMLSplit._from_arff_file
#3256
| Job | Run time |
|---|---|
| 1m 26s | |
| 1m 26s |
OpenMLSplit._from_arff_file
#3256
| Job | Run time |
|---|---|
| 1m 26s | |
| 1m 26s |