Bug description
On some OS, there seem to be race conditions in the JSON DB serialized on the filesystem leading to failures such as this one.
To avoid read/writing to the DB at the same time, the DBMixin should read/write with lock.
This behavior was implemented earlier with a thread.Lock but has been remove has the lock is not serializable accross processes and hence don't worker properly with multiprocessing workers.
Leveraing filelock could be a potential fix for this issue.
Bug description
On some OS, there seem to be race conditions in the JSON DB serialized on the filesystem leading to failures such as this one.
To avoid read/writing to the DB at the same time, the
DBMixinshould read/write with lock.This behavior was implemented earlier with a
thread.Lockbut has been remove has the lock is not serializable accross processes and hence don't worker properly withmultiprocessingworkers.Leveraing filelock could be a potential fix for this issue.