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Optimise event_search in postgres

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This commit is contained in:
Erik Johnston 2016-04-21 16:41:39 +01:00
parent 02a27a6c4f
commit c877f0f034
3 changed files with 137 additions and 5 deletions
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61
synapse/storage/search.py
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@ -29,12 +29,17 @@ logger = logging.getLogger(__name__)
class SearchStore(BackgroundUpdateStore):
EVENT_SEARCH_UPDATE_NAME = "event_search"
EVENT_SEARCH_ORDER_UPDATE_NAME = "event_search_order"
def __init__(self, hs):
super(SearchStore, self).__init__(hs)
self.register_background_update_handler(
self.EVENT_SEARCH_UPDATE_NAME, self._background_reindex_search
)
self.register_background_update_handler(
self.EVENT_SEARCH_ORDER_UPDATE_NAME,
self._background_reindex_search_order
)
@defer.inlineCallbacks
def _background_reindex_search(self, progress, batch_size):
@ -131,6 +136,61 @@ class SearchStore(BackgroundUpdateStore):
defer.returnValue(result)
@defer.inlineCallbacks
def _background_reindex_search_order(self, progress, batch_size):
target_min_stream_id = progress["target_min_stream_id_inclusive"]
max_stream_id = progress["max_stream_id_exclusive"]
rows_inserted = progress.get("rows_inserted", 0)
INSERT_CLUMP_SIZE = 1000
def reindex_search_txn(txn):
sql = (
"SELECT stream_ordering, origin_server_ts, event_id FROM events"
" INNER JOIN event_search USING (room_id, event_id)"
" WHERE ? <= stream_ordering AND stream_ordering < ?"
" ORDER BY stream_ordering DESC"
" LIMIT ?"
)
txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
rows = txn.fetchall()
if not rows:
return 0
min_stream_id = rows[-1][0]
sql = (
"UPDATE event_search SET stream_ordering = ?, origin_server_ts = ?"
" WHERE event_id = ?"
)
for index in range(0, len(rows), INSERT_CLUMP_SIZE):
clump = rows[index:index + INSERT_CLUMP_SIZE]
txn.executemany(sql, clump)
progress = {
"target_min_stream_id_inclusive": target_min_stream_id,
"max_stream_id_exclusive": min_stream_id,
"rows_inserted": rows_inserted + len(rows)
}
self._background_update_progress_txn(
txn, self.EVENT_SEARCH_ORDER_UPDATE_NAME, progress
)
return len(rows)
result = yield self.runInteraction(
self.EVENT_SEARCH_ORDER_UPDATE_NAME, reindex_search_txn
)
if not result:
yield self._end_background_update(self.EVENT_SEARCH_ORDER_UPDATE_NAME)
defer.returnValue(result)
@defer.inlineCallbacks
def search_msgs(self, room_ids, search_term, keys):
"""Performs a full text search over events with given keys.
@ -310,7 +370,6 @@ class SearchStore(BackgroundUpdateStore):
"SELECT ts_rank_cd(vector, to_tsquery('english', ?)) as rank,"
" origin_server_ts, stream_ordering, room_id, event_id"
" FROM event_search"
" NATURAL JOIN events"
" WHERE vector @@ to_tsquery('english', ?) AND "
)
args = [search_query, search_query] + args