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Merge pull request #2214 from matrix-org/rav/hurry_up_purge
When purging, don't de-delta state groups we're about to delete
This commit is contained in:
Richard van der Hoff
GitHub
commit
29ded770b1
1 changed files with 43 additions and 21 deletions
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@ -2033,6 +2033,8 @@ class EventsStore(SQLBaseStore):
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for event_id, state_key in event_rows:
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txn.call_after(self._get_state_group_for_event.invalidate, (event_id,))
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logger.debug("[purge] Finding new backward extremities")
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# We calculate the new entries for the backward extremeties by finding
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# all events that point to events that are to be purged
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txn.execute(
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@ -2045,6 +2047,8 @@ class EventsStore(SQLBaseStore):
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)
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new_backwards_extrems = txn.fetchall()
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logger.debug("[purge] replacing backward extremities: %r", new_backwards_extrems)
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txn.execute(
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"DELETE FROM event_backward_extremities WHERE room_id = ?",
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(room_id,)
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@ -2059,6 +2063,8 @@ class EventsStore(SQLBaseStore):
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]
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)
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logger.debug("[purge] finding redundant state groups")
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# Get all state groups that are only referenced by events that are
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# to be deleted.
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txn.execute(
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@ -2074,15 +2080,19 @@ class EventsStore(SQLBaseStore):
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)
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state_rows = txn.fetchall()
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state_groups_to_delete = [sg for sg, in state_rows]
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# make a set of the redundant state groups, so that we can look them up
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# efficiently
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state_groups_to_delete = set([sg for sg, in state_rows])
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# Now we get all the state groups that rely on these state groups
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new_state_edges = []
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chunks = [
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state_groups_to_delete[i:i + 100]
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for i in xrange(0, len(state_groups_to_delete), 100)
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]
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for chunk in chunks:
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logger.debug("[purge] finding state groups which depend on redundant"
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" state groups")
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remaining_state_groups = []
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for i in xrange(0, len(state_rows), 100):
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chunk = [sg for sg, in state_rows[i:i + 100]]
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# look for state groups whose prev_state_group is one we are about
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# to delete
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rows = self._simple_select_many_txn(
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txn,
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table="state_group_edges",
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@ -2091,21 +2101,28 @@ class EventsStore(SQLBaseStore):
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retcols=["state_group"],
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keyvalues={},
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)
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new_state_edges.extend(row["state_group"] for row in rows)
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remaining_state_groups.extend(
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row["state_group"] for row in rows
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# Now we turn the state groups that reference to-be-deleted state groups
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# to non delta versions.
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for new_state_edge in new_state_edges:
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curr_state = self._get_state_groups_from_groups_txn(
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txn, [new_state_edge], types=None
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# exclude state groups we are about to delete: no point in
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# updating them
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if row["state_group"] not in state_groups_to_delete
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)
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curr_state = curr_state[new_state_edge]
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# Now we turn the state groups that reference to-be-deleted state
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# groups to non delta versions.
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for sg in remaining_state_groups:
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logger.debug("[purge] de-delta-ing remaining state group %s", sg)
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curr_state = self._get_state_groups_from_groups_txn(
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txn, [sg], types=None
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)
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curr_state = curr_state[sg]
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self._simple_delete_txn(
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txn,
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table="state_groups_state",
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keyvalues={
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"state_group": new_state_edge,
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"state_group": sg,
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}
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)
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@ -2113,7 +2130,7 @@ class EventsStore(SQLBaseStore):
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txn,
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table="state_group_edges",
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keyvalues={
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"state_group": new_state_edge,
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"state_group": sg,
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}
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)
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@ -2122,7 +2139,7 @@ class EventsStore(SQLBaseStore):
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table="state_groups_state",
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values=[
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{
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"state_group": new_state_edge,
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"state_group": sg,
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"room_id": room_id,
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"type": key[0],
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"state_key": key[1],
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@ -2132,6 +2149,7 @@ class EventsStore(SQLBaseStore):
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],
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)
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logger.debug("[purge] removing redundant state groups")
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txn.executemany(
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"DELETE FROM state_groups_state WHERE state_group = ?",
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state_rows
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@ -2140,12 +2158,15 @@ class EventsStore(SQLBaseStore):
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"DELETE FROM state_groups WHERE id = ?",
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state_rows
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)
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# Delete all non-state
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logger.debug("[purge] removing events from event_to_state_groups")
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txn.executemany(
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"DELETE FROM event_to_state_groups WHERE event_id = ?",
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[(event_id,) for event_id, _ in event_rows]
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)
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logger.debug("[purge] updating room_depth")
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txn.execute(
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"UPDATE room_depth SET min_depth = ? WHERE room_id = ?",
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(topological_ordering, room_id,)
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@ -2171,16 +2192,15 @@ class EventsStore(SQLBaseStore):
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"event_signatures",
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"rejections",
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):
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logger.debug("[purge] removing non-state events from %s", table)
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txn.executemany(
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"DELETE FROM %s WHERE event_id = ?" % (table,),
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to_delete
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)
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txn.executemany(
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"DELETE FROM events WHERE event_id = ?",
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to_delete
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)
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# Mark all state and own events as outliers
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logger.debug("[purge] marking events as outliers")
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txn.executemany(
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"UPDATE events SET outlier = ?"
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" WHERE event_id = ?",
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@ -2190,6 +2210,8 @@ class EventsStore(SQLBaseStore):
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]
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)
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logger.debug("[purge] done")
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@defer.inlineCallbacks
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def is_event_after(self, event_id1, event_id2):
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"""Returns True if event_id1 is after event_id2 in the stream
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