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Diffstat (limited to '')
| -rw-r--r-- | synapse/storage/events.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/synapse/storage/events.py b/synapse/storage/events.py index 22699cb689..93ac80ee48 100644 --- a/synapse/storage/events.py +++ b/synapse/storage/events.py @@ -1872,6 +1872,9 @@ class EventsStore(EventsWorkerStore): "CREATE INDEX events_to_purge_should_delete" " ON events_to_purge(should_delete)", ) + + # We do joins against events_to_purge for e.g. calculating state + # groups to purge, etc., so lets make an index. txn.execute( "CREATE INDEX events_to_purge_id" " ON events_to_purge(event_id)", @@ -2119,6 +2122,11 @@ class EventsStore(EventsWorkerStore): # # So, let's stick it at the end so that we don't block event # persistence. + # + # We do this by calculating the minimum depth of the backwards + # extremities. However, the events in event_backward_extremities + # are ones we don't have yet so we need to look at the events that + # point to it via event_edges table. txn.execute(""" SELECT COALESCE(MIN(depth), 0) FROM event_backward_extremities AS eb |