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Fix set operations thinko

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This commit is contained in:
Erik Johnston 2018-10-29 14:21:43 +00:00
parent f4f223aa44
commit 664b192a3b
1 changed files with 4 additions and 3 deletions
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7
synapse/storage/state.py
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@ -1293,10 +1293,11 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
retcols=("prev_state_group", "state_group",),
)
next_to_search.update(row["state_group"] for row in rows)
prevs = set(row["state_group"] for row in rows)
# We don't bother re-handling groups we've already seen
next_to_search -= state_groups_seen
state_groups_seen |= next_to_search
prevs -= state_groups_seen
next_to_search |= prevs
state_groups_seen |= prevs
for row in rows:
# Note: Each state group can have at most one prev group