diff --git a/synapse/storage/events.py b/synapse/storage/events.py
index 2ab44ceaa7..512828cf34 100644
--- a/synapse/storage/events.py
+++ b/synapse/storage/events.py
@@ -2033,6 +2033,8 @@ class EventsStore(SQLBaseStore):
for event_id, state_key in event_rows:
txn.call_after(self._get_state_group_for_event.invalidate, (event_id,))
+ logger.debug("[purge] Finding new backward extremities")
+
# We calculate the new entries for the backward extremeties by finding
# all events that point to events that are to be purged
txn.execute(
@@ -2045,6 +2047,8 @@ class EventsStore(SQLBaseStore):
)
new_backwards_extrems = txn.fetchall()
+ logger.debug("[purge] replacing backward extremities: %r", new_backwards_extrems)
+
txn.execute(
"DELETE FROM event_backward_extremities WHERE room_id = ?",
(room_id,)
@@ -2059,6 +2063,8 @@ class EventsStore(SQLBaseStore):
]
)
+ logger.debug("[purge] finding redundant state groups")
+
# Get all state groups that are only referenced by events that are
# to be deleted.
txn.execute(
@@ -2076,6 +2082,10 @@ class EventsStore(SQLBaseStore):
state_rows = txn.fetchall()
state_groups_to_delete = [sg for sg, in state_rows]
+ logger.debug(
+ "[purge] finding state groups which depend on redundant state groups"
+ )
+
# Now we get all the state groups that rely on these state groups
new_state_edges = []
chunks = [
@@ -2096,6 +2106,8 @@ class EventsStore(SQLBaseStore):
# Now we turn the state groups that reference to-be-deleted state groups
# to non delta versions.
for new_state_edge in new_state_edges:
+ logger.debug("[purge] de-delta-ing remaining state group %s",
+ new_state_edge)
curr_state = self._get_state_groups_from_groups_txn(
txn, [new_state_edge], types=None
)
@@ -2132,6 +2144,7 @@ class EventsStore(SQLBaseStore):
],
)
+ logger.debug("[purge] removing redundant state groups")
txn.executemany(
"DELETE FROM state_groups_state WHERE state_group = ?",
state_rows
@@ -2140,12 +2153,15 @@ class EventsStore(SQLBaseStore):
"DELETE FROM state_groups WHERE id = ?",
state_rows
)
+
# Delete all non-state
+ logger.debug("[purge] removing events from event_to_state_groups")
txn.executemany(
"DELETE FROM event_to_state_groups WHERE event_id = ?",
[(event_id,) for event_id, _ in event_rows]
)
+ logger.debug("[purge] updating room_depth")
txn.execute(
"UPDATE room_depth SET min_depth = ? WHERE room_id = ?",
(topological_ordering, room_id,)
@@ -2171,16 +2187,15 @@ class EventsStore(SQLBaseStore):
"event_signatures",
"rejections",
):
+ logger.debug("[purge] removing non-state events from %s", table)
+
txn.executemany(
"DELETE FROM %s WHERE event_id = ?" % (table,),
to_delete
)
- txn.executemany(
- "DELETE FROM events WHERE event_id = ?",
- to_delete
- )
# Mark all state and own events as outliers
+ logger.debug("[purge] marking events as outliers")
txn.executemany(
"UPDATE events SET outlier = ?"
" WHERE event_id = ?",
@@ -2190,6 +2205,8 @@ class EventsStore(SQLBaseStore):
]
)
+ logger.debug("[purge] done")
+
@defer.inlineCallbacks
def is_event_after(self, event_id1, event_id2):
"""Returns True if event_id1 is after event_id2 in the stream
|
