Fix up comments

This commit is contained in:
Erik Johnston 2018-10-12 13:49:48 +01:00
parent d9f3db5081
commit 67a1e315cc

View File

@ -1044,9 +1044,9 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
def _is_state_group_referenced(self, txn, state_group):
"""Checks if a given state group is referenced, or is safe to delete.
A state groups is referenced if it or any of its descendants are
pointed at by an event. (A descendant is a group which has the given
state_group as a prev group)
A state group is referenced if it or any of its descendants are
pointed at by an event. (A descendant is a state_group whose chain of
prev_groups includes the given state_group.)
"""
# We check this by doing a depth first search to look for any