Parallel Unit tests fail to clone DBs with TimescaleDB

[Kenneth Fortner]

If you use a TimescaleDB and run your unit tests in parallel Django will fail to clone the first test database to the additional databases.

Cloning test database for alias 'foo' ('foo_testDB')...Got an error creating the test database: source database "foo_testDB" is being accessed by other users
DETAIL: There is 1 other session using the database.

#### DB Section
DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.postgresql_psycopg2',
            'HOST': 'timescale',
            'USER': "user",
            'NAME': 'fooDB',
            'PASSWORD': "pwd",
            'PORT': '5432',
            'TEST': {
               'NAME': foo_testDB
            }
 }


#### Test call
python manage.py test --parallel 4

[Tim Graham]

Django doesn't provide any support or testing for TimescaleDB, so it's not clear that Django is at fault. Feel free to reopen if you can at least provide some analysis of the situation. I imagine a custom database backend might be required which should be done as a third-party package rather than in Django itself.